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.
NO BOX OR PAPERS. NOT ORIGINAL STRAP.
EXCELLENT ORIGINAL CONDITION THROUGHOUT.
EXTREMELY RARE AND DESIRABLE.
GREAT PART OF ANY COLLECTION.
ANY INSPECTION WELCOME.
12 MONTH WARRANTY.