Seiko 6306-7000 from 1976 - is it original? - Seiko & Citizen Watch Forum Japanese Watch Reviews, Discussion & Trading
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Old 03-26-2019, 12:14 PM   #1 (permalink)
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Default Seiko 6306-7000 from 1976 - is it original?

Just got a new vintage watch - 6306. It's the first vintage diver and the first Seiko diver for me. Possible the most "expensive" watch I have (compared to a couple of Bellmatics and manual-winders in my collection).

It just arrived and I noticed 2 issues:

- Bezel is very loose. It rotates in both directions. I think it could be a replacement since it seems different to me than on other photos I saw. The font looks good, maybe, but the teeth on the side look different. Lower row teeth are "cut in half" and smaller than the upper row teeth.

- Movement doesn't hack. I think it should, right? There are marks that it has 21 jewels (vs 17 in 6309), but I'm not sure if it's an issue with the movement or if it's not original.

Any thoughts? Thank you!


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Old 03-26-2019, 12:38 PM   #2 (permalink)
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It should hack.
Bezel likely needs a new gasket or the click ball has sunk a little.
Hacking lever is either missing or dislodged, bent.
Dial looks good.
As do hands.
Case and rotating ring seem to match in terms of wear, insert is original.
Rotating ring machined edge is of a certain look and afaik correct for the watch.
Wider spline crown is correct.
Date is correct.

Nice watch. Need a movement pic to see if the movement has a 6306A automatic framework.
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Old 03-26-2019, 12:47 PM   #3 (permalink)
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Also incase you didn't know, the 7000 wasn't released for very long. Possibly only a year, not sure. Harder to find so if you didn't know this.... nice catch.
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Old 03-26-2019, 01:00 PM   #4 (permalink)
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Thanks for your comments.


Here's the movement image. Light is not the best any more. Sorry.


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Old 03-26-2019, 01:04 PM   #5 (permalink)
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Well.. looks like a 6306.. sometimes the hacking lever distorts and doesn't operate. Or it becomes free of the castle wheel and so doesn't flick back and forth with the crown. You have to take the train bridge off to check, so...at some point a service is needed.
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Old 03-26-2019, 08:57 PM   #6 (permalink)
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Nice grab. Looks all legit.

Rob
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Old 04-05-2019, 04:41 AM   #7 (permalink)
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Very nice indeed. 6306-7000's don't come along very often. I bought my July 1976 7000 from the Japanese Yahoo auction. Well done finding this one.
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Old 04-05-2019, 04:51 AM   #8 (permalink)
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Yes, it was a very lucky find. I didn't know almost anything about 6306 before I found this one and started reading online. (Although I did know about 6309.)

I took the watch to a service. Hopefully, I'll find more about the hacking lever in a few days.

But, the watchmaker said he can't fix the bezel in short notice. I did found that if I lightly press the bezel, it operates fine, with clicks. But it's loose when it's not pressed.
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Old 04-09-2019, 04:42 AM   #9 (permalink)
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The watch is back from the service. The watchmaker said that the mechanism is in a fine shape, but it was serviced before. Hacking lever is missing. I think I saw one online, so I'll try to find a replacement.

He removed the bezel. Does anyone know what's missing so it operates correctly?



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Old 04-09-2019, 07:48 AM   #10 (permalink)
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Sounds like you're missing the bezel gasket. They're easy to source and fit.


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Old 04-09-2019, 08:07 AM   #11 (permalink)
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It seems to me that the gasket is there. Right?


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Old 04-09-2019, 10:06 PM   #12 (permalink)
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Aloha
Hacking Lever in Movement.
Hacking Lever in parts boxes.
I think one of our members have these.

Aloha
Louis
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Old 07-02-2019, 05:41 AM   #13 (permalink)
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A quick update about the watch. It's back from the second service:





On the first service, the watchmaker did a movement overhaul. It took a while for me to get the parts for the second service:


- a hacking lever from a forum member
- a new crystal from Spencer Klein
- a new set of gaskets from Vintage Time Australia


So the watch now hacks and the crystal looks great. I hope to take the watch to a Seiko specialist in a few years, but I'm happy for now.


Now, I may have mentioned that I plan to sell the watch. The thing is, I really wanted to get SRP777 from the moment it was released. The watch looked great on paper and photos, considering the price. However, when I tried it for the first time, it just didn't look like I image it would. I couldn't explain exactly what I didn't like, but it didn't feel like it should. So, when I got this watch, I though it's going to be the same. So I planned to sell it, buy a modern affordable diver and spend the rest for something else.


The problem is, I just can't get this watch off my wrist. I tried to use some Seiko 5s, manual winders and Bellmatics that I have. They work for a few hours, but then this watch is back on my wrist. I'm reluctant to try with a pry or a chemical.


So it seems that this one is a keeper. At least for now. There are several things that I prefer on this one over the SRPs:


- the lollypop hand
- slightly different dimensions
- less text and more balanced text on the dial
- more subtle minute markers
- more subtle hour markers



These are all small things to me. However, the watch looks very much different than SRP777. And for some reason, it works for me.


I do have one more problem, though, and I would appreciate any advice. The bezel is not as loose as before, but it doesn't click properly. It doesn't click between 12 and 7 hour markers. But it clicks between 7 and 12. If I press it lightly, it clicks everywhere. The click ball is there. And the gasket is from VTA.


The gasket set had a small bag with silicone. The watchmaker didn't use it on the bezel gasket, as he didn't know if it should be used there. Should I use it?


Are there any other things I should try to fix the issue?


Also, the watch is spending time on different NATOs now. I would like to find a nice rubber strap, though. My list for now is:


- GL831 from Uncle Seiko
- DAL1BP from Seiko
- Model 284 from Bonetto Cinturini
- A tropic strap from Uncle Seiko


The most important thing for me is comfort, since I wasn't too happy with rubber straps in past. Any suggestions?

Thanks everyone for advice.
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