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Forum Home > 7Axx General Discussion Area > Seiko gives you the Moon - Show us your 7A48s

Seiko7A38
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Chris at June 10, 2013 at 1:18 PM

Here is my 7A48-7000.

I used this to illustrate a somewhat tongue-in-cheek article on accuracy in the WUS HAQ forum.

I bought it last year from Germany and it looked almost unused. I wear it very rarely, partly to keep it mint, and also because it just isn't very readable in a hurry. Paul was interested in the watch and has found some quite interesting information.

So here are the photos and I'll let him fill in the details. Apologies for the moon but I didn't want to wait 2 weeks for a better picture.

Note there is no "SPORTS 100" or "Chronograph" dial inscription:


The back is actually silver in colour - I think you're seeing the reflection of my lens:

This is the Japanese (short) clasp, 30mm instead of 35mm:

Only 5 micro-adjustment holes, instead of 7:

If anyone has any questions please let me know.

OK, Paul, it's your turn.

Chris.


Thanks, Chris. Note I've edited your post slightly, adding in a link to your original WUS thread. Hope that's OK with you. ;)


It was something that Chris wrote in one of the PM's we exchanged over the weekend that got me started thinking:

It has the plain s/steel bracelet, without gold plating on the middle bits, ....


This didn't sound quite right to me, because, from memory, I'd always thought that 7A48-7000 / -7009 bracelets were two-tone.

So I asked Chris what part number was stamped into the bracelet end link tubes, thinking he might have a wrong un. He replied:

My end links are stamped with AA05B and, apart from "SEIKO" on the clasp and the arrows on the removable links, there's no other marking. Looking carefully at the middle bits, there is no sign of any colour other than s/steel.


So I did a reverse look-up (asked 'where used?') on Seiko Oceania's database, and sure enough, it was a valid part number:




Some of us, like myself (who know a little about 7A48's) might have expected Z1093C to be the only bracelet used on a 7A48-700x:



Although I've seen dozens of these on eBay over the years, I obviously hadn't been paying enough attention. Naturally, I'd already sussed that the normal (European) export model 7A48-7000 only had SEIKO QUARTZ printed on the dial, and that the US export model 7A48-7009 had SEIKO Chronograph QUARTZ and SPORTS 100, but another different (all stainless) bracelet version ??


The first clue is in the part number AA05B. AA in general manufacturing terminology (at least as I knew it) means Altered Assembly.

Look at the clasp. Instead of being the usual 35mm long x 16mm SEIKO SQ clasp with 7 pairs of adjustment holes, that was used on the 'normal' 7A48-7000 and 7A48-7009's Z1093C bracelet, it's a shorter 30mm 5-hole clasp closer with only 5 adjustment positions.


The other clue is in its sales model code: SSJH010. SSJxxxx ring any bells with anybody ? :|

It's a JDM model code prefix. The JDM 7A38's (which I was familiar with), all begin SSJSxxx. Seems the JDM 7A48's begin SSJHxxx:



You may recognise the next code down - it's the 7A48-7050 Fishing Master  which I had always assumed was a JDM model.

But it had never dawned on me before, that there might have been JDM variants of other 'more common' 7A48's - like the 7A48-7000.

But that's what I reckon Chris' watch is. ;)


In fact, once you know what you're looking for, they're not that difficult to spot (or tell apart from the normal export 7A48-7000):


http://www.thewatchsite.com/index.php?topic=23669.0 (one offered FS on SCWF back in September 2011).

http://www.keepthetime.com/index.php?main_page=product_info&products_id=317

http://akiyose.com/battery-exchange/seiko/chronograph/seiko-7a48-7000.html


June 10, 2013 at 1:46 PM Flag Quote & Reply

Seiko7A38
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Posts: 9119

The table of search results (on SSJH codes) that I posted above, showing the three JDM 7A48 model codes also clears up another earlier misunderstanding (of mine). Go back to the first page, and you'll see towards the bottom I was rambling on, including writing ....


Something else worth mentioning, is that like many examples of 7A48-7010 I've seen (on eBay), this one also appears to have had all the presumably worn gold plating polished off the bezel.


Inexcusable really - I should have studied (all) the contents of this search result on 7A48-7010 a bit closer:


June 10, 2013 at 4:34 PM Flag Quote & Reply

Seiko7A38
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Seiko7A38 at August 21, 2012 at 5:25 AM

But I may be wrong about that last part. ;)

Look at that table again. It would appear that there were two subtly different versions of 7A48-7010 - but both with 'GOLD' dials.


SPV004 is presumably the same as Pascal's example with the all-over gold plated bezel.

That uses a 7A48 dial part number 7020XG14 - with a bezel part number 82333541. (A bezel p/n ending in 1 usually signifies SGP.)


The other product code, SSJH994 uses a different dial p/n 7030XG14, with a different presumably two-tone bezel p/n 82333543.


Look closely at the dial in Pascal's 7A48-7010, and not only does it have SPORTS 100 printed on it, but you can read 7A48 7020. 8)

So presumably the other gold dial (not silver - it's a badly over-lit photo) without SPORTS 100 will have 7A48 7030 printed at bottom.


I think this probably still needs input from someone who knows a bit more about 7A48's than I do (and that's not a lot !) :D


I was actually quite close in what I wrote in this post, but didn't add 2 + 2 at the time. :/ Now it's all beginning to make more sense. 8)

It's clear from the lack of gold plated bracelet joining links on the JDM 7A48-7000, that Seiko's marketing people decided to 'de-bling' the JDM version for their home market. That's exactly what they did with the gold dialed 7A48-7010. Instead of having the gold plated bezel, it uses the predominantly stainless bezel (with just the gold plated dummy rivets) used on the 7A48-701A (Seiko p/n 8233343).

The 7A48-7010 SSJH994 variant being the rather more discreet de-blinged JDM version:


 

June 10, 2013 at 4:35 PM Flag Quote & Reply

Seiko7A38
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Posts: 9119

Definitely no excuses for my lack of prior research (into 7A48's). I happened to be scrolling though an online .pdf scan of the 1985 Japanese Seiko cataloge, this afternoon (looking for something else), and what should be together at the bottom of page 58, but ....



7A48-7010 SSJH994 and 7A48-7000 SSJH010. Best I can tell, they first appeared in the 1983 H2 Japanese catalogue (on page 34).


June 11, 2013 at 12:10 PM Flag Quote & Reply

ric

Posts: 44


Well here is my second 7A48-5010 that I have just rebuilt, with a new glass from a scrap 7T39 and which has a slight dome to it and spare movement. The 7A48-7000 I have owned from new back in 1985, which I mainly wear with wrong bracelet fitted. :o


June 24, 2013 at 2:49 PM Flag Quote & Reply

garacs1
Member
Posts: 508

Hello everybody, I am back!

This time, I managed to get my hands on a 7a48-7000! I finally managed to go one step forward in the completion of my collection of Seiko chronographs, which I hope will include 1 watch for each model and series.

I just won the watch off eBay today, so I really do not have pictures of it yet, apart from the eBay auction's one, so forgive me for the low quality of it, but I wanted oh so much to show it off to you as soon as I won it :)

The original description of the eBay auction goes something like this:

"Seiko Chronograph Quarz Sports 100 Typ 7A48-7000 Nr. 793493 Bicolor Mit MondphaseVoll funktionsfähig, bis auf den großen Sekundenzeiger (klemmt) Die 3 kleinen Anzeigen funktionieren."

Which translated means:

"Seiko Chronograph Quarz Sports 100 model 7A48-7000 Serial Number 793493 Two-Tone with Moonphase - Perfectly functioning except the central Seconds hand (it is jammed). The three small dials hands work fine."

Considering the description, Probably the watch either needs a clean and oil service, or the chronograph button is jammed on the case, I could not really figure out what the seller meant. I will know better when I receive the watch, probably in a week or so.

I am extremely happy for having won this watch, since it will be put aside my only other moonphase-capable Seiko, the 7T36-6A4A.

And of course will allow me to continue with the "two-tone" series, together with the 7A34-7000 and the 7T32-6A50 I already own. I really hope the condition of the case and glass is good... New pics as it arrives, promised.

--

My personal Blog: www.onlyvintagewatches.com/blog

October 3, 2013 at 10:03 AM Flag Quote & Reply

Seiko7A38
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Apologies for the slightly post, but it is 7A48 related. :P

7A48-7000's or US market -7009's and even the JDM version (once you know what you're looking at) are pretty common on eBay ....

Is anybody else watching this one ? A very tidy, but not NOS example of a 7A48-7009: http://www.ebay.co.uk/itm/131005357488

Quote: You will not find another like this watch in this condition. Reference 7A48-7009, A6.

Currently @ $412 after 23 bids, with 12 hours of the auction still to run ! 

October 4, 2013 at 11:54 AM Flag Quote & Reply

garacs1
Member
Posts: 508

$515.01 !! Cannot believe it went for so much money! Was I only lucky to get mine at less than 30€?? Ok that this one is in almost excellent conditions, as we can see from the original pictures used in the auction, and mine probably (since I still di not receive it...) is going to be pretty well worn up, but honestly....

--

My personal Blog: www.onlyvintagewatches.com/blog

October 5, 2013 at 6:08 AM Flag Quote & Reply

Seiko7A38
Site Owner
Posts: 9119

You beat me to it, George. :P That was going to be my next post. ;) Here's the screen print I'd already captured anyway:


http://www.ebay.co.uk/itm/131005357488


Yes serious money - for what is almost certainly the most commonly seen version of all the 7A48's. Sold for $515 (approx. £320) ! :o

These regularly sell on eBay in the States, in the $100 - $200 price range and are quite common on eBay Germany  too - usually around the 100 Euros mark. So if you picked yours up for only 30 Euros, George (and it's any good), you got yourself a bargain. ;)


October 5, 2013 at 6:25 AM Flag Quote & Reply

ginny

Posts: 46

garacs1 at October 3, 2013 at 10:03 AM

Hello everybody, I am back!

This time, I managed to get my hands on a 7a48-7000! I finally managed to go one step forward in the completion of my collection of Seiko chronographs, which I hope will include 1 watch for each model and series.

I just won the watch off eBay today, so I really do not have pictures of it yet, apart from the eBay auction's one, so forgive me for the low quality of it, but I wanted oh so much to show it off to you as soon as I won it :)

The original description of the eBay auction goes something like this:

"Seiko Chronograph Quarz Sports 100 Typ 7A48-7000 Nr. 793493 Bicolor Mit MondphaseVoll funktionsfähig, bis auf den großen Sekundenzeiger (klemmt) Die 3 kleinen Anzeigen funktionieren."

Which translated means:

"Seiko Chronograph Quarz Sports 100 model 7A48-7000 Serial Number 793493 Two-Tone with Moonphase - Perfectly functioning except the central Seconds hand (it is jammed). The three small dials hands work fine."

Considering the description, Probably the watch either needs a clean and oil service, or the chronograph button is jammed on the case, I could not really figure out what the seller meant. I will know better when I receive the watch, probably in a week or so.

I am extremely happy for having won this watch, since it will be put aside my only other moonphase-capable Seiko, the 7T36-6A4A.

And of course will allow me to continue with the "two-tone" series, together with the 7A34-7000 and the 7T32-6A50 I already own. I really hope the condition of the case and glass is good... New pics as it arrives, promised.


Hi George. Looks like you have done well with your new 7A48-7000, hope you can fix the problem ok. I purchased this one from Japan, and also hoping there is not much of a problem with it. Stuart.

http://www.easyauctionjapan.com/productdetail.php?productId=x306501795

October 5, 2013 at 8:08 PM Flag Quote & Reply

Seiko7A38
Site Owner
Posts: 9119

So it follows, yours is a JDM version, Stuart.




As Chris stated in his earlier post (quoted at the top of the page): Note there is no "SPORTS 100" or "Chronograph" dial inscription.

The dials on those JDM 7A48-7000's look much nicer - far less cluttered, for the lack of the additional printing. IMHO. :)

But I prefer it with the US market / normal export two-tone Z1093C bracelet, which matches the rest of the watch better.

October 6, 2013 at 4:19 AM Flag Quote & Reply

garacs1
Member
Posts: 508

Indeed Stuart's version does look cleaner (the dial design) without the inscriptions. 

--

My personal Blog: www.onlyvintagewatches.com/blog

October 6, 2013 at 9:17 AM Flag Quote & Reply

garacs1
Member
Posts: 508

The 7A48-7000 I bought arrived today, faster than expected, and apart the chrono seconds hand which apparently is jammed (if I start the chrono, the small 1/10s hand starts correctly to turn, but the big seconds hand ticks back and forth, as if something is jamming the gears inside - which I hope is not the case) and really hard to push buttons, all functions work perfectly. the watch is really dirty, and the bracelet has seen better days, being somewhat stretched, but original (the part number is Z1093-E). The case itself is not in really bad conditions, though. the gold plating on the crystal bezel is worn out, sure, but there is still enough to see it. The crystal is full of scratches, and will need replacing, that's for sure! The dial itself is pretty clean, even if it shows some patina (yellowing) on all borders of the small dials, but a part from that, the watch is n overall good conditions. Considering I bought it for 28€ + shipping, I cannot complain ;) This of course is a keeper, being my first 7A48. Will update with hi-res photos as soon as I manage to clean it.

--

My personal Blog: www.onlyvintagewatches.com/blog

October 9, 2013 at 6:12 AM Flag Quote & Reply

garacs1
Member
Posts: 508

Probably the easiest fix ever? Before cleaning it, I wanted to be sure what I was suspecting was the case why the chrono seconds hand was stuck like that. I had a suspicion it was the Friction Spring for the Second Counting Wheel.

Paul has so many times pointed that as a common issue, that I was 95% sure it was so. Well, I opened the back of the case, and this is what I found:

A close-up of the problem:

I only needed to lift the friction spring a little with a screwdriver, and it went back in place. Obviuously, the chrono second hand is now working perfectly, as it should!

Now time to disassemble, clean, reassemble, oil, and it's good to go, until I buy I replacement crystal, of course.

--

My personal Blog: www.onlyvintagewatches.com/blog

October 9, 2013 at 6:49 AM Flag Quote & Reply

garacs1
Member
Posts: 508

Last picture, I promise:

The crystal has to be replaced, no question about it... All the rest is working fine, now: the buttons were only full of gunk, once removed and olied, the work perfectly, and so does the crown. I did not disassemble the movement yet, though, will wait until the battery runs out.

--

My personal Blog: www.onlyvintagewatches.com/blog

October 9, 2013 at 10:18 AM Flag Quote & Reply

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