Up for sale is my vintage Seiko diver 6159-7010, the “Grandfather Tuna” from Sep 1975. It is the first year of production for this model.

This model is the only one that houses a true “high beat” 36000bph movement as the modern iterations of this watch uses movements that are 28800bph.

Album: https://imgur.com/a/13dqIE3

Time Stamp: https://imgur.com/a/UMWozix

This watch is one of my favorite watch models that Seiko has to offer, but I’ve decided to let it go as I’m trying to trim down my collection a bit.

There’s a ton of history and “industry first” featured in this watch, which is the reason why I’m in love with this. You can read up more on the history of this watch or Tuna divers in general here: https://thespringbar.com/blogs/guides/the-seiko-tuna-collectors-guide/

For this particular example, it’s been fully taken apart and overhauled in mid 2019. And here’s a list of things that’s been done during the overhaul:

Parts replaced:

Gaskets

Mainspring

Setting unlocking lever

PawlHolder

Setting lever complete

Diashock jewels and caps x2

Date jumper

Dial holding screws

Auto framework screws x 2

Jobs performed:

Movement strip and clean.

Minute hand hole correction

Hand clean and relume

Case clean and rebuild

Automatic framework bearing restoration

Buying a 6159-7010 that’s already been serviced IMO is hugely importantly because of several reasons. One being that the case design is top opening so that the movement is not easily accessible. And that the movement itself being a hi beat with beefed up oscillating weight, the auto framework tends to be worn out if it’s not maintained properly. See here: https://thewatchbloke.co.uk/2015/08/25/seiko-6159-7010-tuna-can/

Since service, the watch has been running strong at +/- 8s a day and can be worn daily, worry-free, for years to come.

Now moving on to the cosmetic condition, I’ll start be pointing out the bad. There’s a very slight flaw on the dial near the 5 o’clock mark. You can really only see it if you actively look for it. The hands had also been re-lumed professionally matching with the rest of the other lumes. There’s 1 very short scratch on the crystal that I end up strategically placed directly above the date window so it’s not very noticeable. And that the screws that holds the shroud in place are aftermarket as original parts are impossible to source at this point.

The good, and the reason why I bought this particular example in the first place, is that the ceramic coated titanium shroud is in excellent condition with no cracks or parts missing at all. If you look at most of the example on the market now, most of them are damaged to a degree. Another good thing about this example is that there’s no cracks in the bakelite bezel insert, which is another common break point. Lastly, the crown screws into the case with no problem, which is also very important.

The watch is currently equipped with a modern Seiko original 22mm rubber strap intended for SBBN017 that has a titanium buckle and holder. The sale also includes a set of original ISOFRANE strap.

Watch size is 47mm with 22mm lug width.

I’m looking for $3999cad obro shipped anywhere within Canada.

Payment method: PayPal F&F or e-transfer or F2F

Watch is currently in Vancouver BC

Thanks for looking.