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Seiko GS
Grandfather Tuna

Pre-owned () | Year of production 1975 | No original box | No original papers
+ $138 for insured shipping to
Wire transfer

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Shipping and Seller Information

Item is in stock
Anticipated delivery: 6/14 - 6/26
4.6 ( )
Contact seller Average response time 13 hours

More About This Listing

Basic Info

Listing code DKOGY0
Brand Seiko
Model GS
Reference number 6159-7010
Movement Automatic
Case material Titanium
Bracelet material Textile
Year of production 1975
Condition (Worn with little to no signs of wear)
Scope of delivery
No original box, no original papers
Gender Men's watch/Unisex
Location United Kingdom, Guildford,Surrey
Price £5,500 (= $7,083)
Availability Item is in stock


Movement Automatic


Case material Titanium
Dial Black


Bracelet material Textile


We have for sale this rare Seiko Professional 600 ‘Grandfather Tuna’

A quick search on the Seiko 6159-7010 will bring up the familiar story of why the original Tuna was created by Seiko. Complaints by Japanese professional divers in the late 1960s about watch failures at working depths led to a serious undertaking by Seiko to design a true, effective tool watch that could withstand all the pressures of working while submerged. The result came in 1975: the Seiko 6159-7010 Professional. Its industry-first features included the titanium case, ceramic-coated titanium shroud, L-shaped gasket, and vented rubber strap. With a 600-meter depth rating, the 6159 also went without a helium release valve. Visually, the most distinctive element of the Seiko 6159-7010 is its screwed-on shroud which gives the watch it’s “tuna can” profile, and hence nickname. The shroud protects the case while also allowing for two access points to spin the bidirectional bezel. Of course, this shroud adds a lot of visual mass and creates the 50.5-mm case diameter. Inside the watch beats the 6159a, a Grand Seiko-derived 36,000-vph automatic movement. It hacks and can be hand wound. Date changing is quick-set. There’s no doubt that Seiko pulled out all the stops for this piece. Incidentally, the Seiko 6159-7010 (also marketed as the 7019 outside of Japan) was made from 1975 until early 1979.

The watch is presented in remarkable condition and is being sold as watch only.

All of our watches have undergone a thorough inspection of water resistance, accuracy, functionality, and authenticity by our specialist watch makers.

The images provide on our website are taken in-house and of the watch we have in stock.

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Active on Chrono24 since 2015

Maunder Watch Co

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Trusted Seller since 2015


United Kingdom


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