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Discussion Starter · #1 ·
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Back in September 2014 I found a NOS gold-plated 1966 Seikomatic-R, a stunningly beautiful watch that looks dressy to me, I guess because of the gold plating.


But this second example gives me the impression of being a real "business class" watch. Not a low-level employee style, more like a watch the stern boss-man would wear.


Aww, look! A cute medium-sized EMS bag!



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Ahh, the plastic grocery bag! The astute observer will know already what seller this is from!



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Bonus! I actually received two grocery bags, along with the local newspaper.



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The usual bagged and bubble-wrapped bundle is inside the newspaper.



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It definitely looks like I got a watch!



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Yes, it is a 1967 Seikomatic-R 8305-8030, in stainless steel this time, with an 30 jewel 8305B movement, which I found out (the hard way) is an automatic-only movement, not also hand-wind-able like the 8305C!



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Here is a closer look, and while not NOS, it is very clean. A couple of interesting tidbits are that the 8305 movement allows quick-set of the date in both directions and has a integrated "inversion-roller" winding mechanism, which although more complex, is thinner and supposed to be smoother than the ubiquitous "Magic-Lever" system seen in so many Seiko automatics.



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Here is the crown side.



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The common side.



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The clasp of the non-Seiko bracelet. An interesting bracelet link design, but this bracelet is very short, like for a 6 inch writs.



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And the case-back picture.



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That bracelet was not only very short it was grossly dirty!! After I got it off the watch I went and washed my hands before I would touch the new strap I was going to put on, I mean "Yuck!"


But now with the smooth black leather strap, I think the watch looks very "sharp", very business-like, but with a classy "well to do" look.



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I took these pictures last night, and I have been wearing the watch at work today, where it has been easy to read and seems very accurate.


Thanks for looking!


- Thomas
 

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Great catch, Thomas!

The 8305-8030 is one of the nicest calibre 83 models, IMO - I like everything about that watch, be it case shape, dial/markers, hands, crown... Unfortunately, I haven't yet managed to find one for myself (i. e., on original bracelet), so I do in fact envy you a little :)

Congrats and enjoy!
Best
H
 

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Discussion Starter · #3 ·
Thank you sir!

Thank you Hermann,


Coming from a gentleman of your taste and distinction, the complement is greatly appreciated. :039:


But if you get an early one, don't try to hand-wind it! :p


- Thomas
 

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Discussion Starter · #5 ·
Uht-oh, are you sure?

Thanks, Thomas :)

The non-handwindable calibre 83s are easily distinguished by their recessed 4 o'clock crown - if that's what you were referring to :)

Best
H

Hmm, my 1967 Seikomatic-R, with the crown at 3 o'clock, will not hand-wind, and when I asked the seller about that, he said that it had the 8305B movement inside, which does not hand-wind, compared to the 8305C movement that does hand-wind.


I had a trouble finding any corroborating information online, until I found this listing:

http://www.seikodigitalwatches.com/seikocal2.htm

which seemed to confirm his statement.


- Thomas
 

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Interesting about the lack of hand wind on your 8305B. The large crown would suggest otherwise. I have an 8306A from '68 and it does have this. I think it has a "roller clutch" rather than the magic lever system.

Mine is a Sealion CR220, and not a "Business".

Unfortunately I can't find the photos at the moment, but it would be interesting to compare movement shots.

Edit: Found 'em





( I don't have the right tool at home to get the back off in order to show the other side of the movement, under the rotor).
 

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Hi Thomas,

you are of course right - the 8305A&B cannot be handwound, whereas all other calibre 83 variants (8305C, 8306, 8325, 8346) can.

Here are two movement pictures, look at the differences around the "crown wheel" - the 8305B has not connection to the crown, the instructions on the movement are for a watchmaker using a screwdriver to wind the barrel. The 8305C has a different setup allowing winding via the crown:

8305B.jpg
8305C 30J (7).jpg

The puzzler for me here is the following: I also have a 8305 from 1967, but it has the 8305C inside. I also had (sold this week) a 8306A from 1965 - so both watches are equipped with handwindable calibre 83 variants.

It seems - for whatever reason - that Seiko manufactured the non-handwindable 8305B in parallel? Interesting.

Best
Hermann
 
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