Late 1970’s YEMA [France] “Sous Marine” Vintage Diving Watch – Ref. T20556


Out of stock

A wonderful example of a late 1970’s Quartz “Sous Marine” Ref. T20556 from the historic French brand of YEMA, this vintage timepiece is in excellent, original condition and comes on a same-era NOS black rubber strap.

I have just had the watch tested and timed and it is ticking away happily with all functions working as they should. The 37mm solid stainless steel case [40mm including the crown at 3h] is in a great condition and I have lightly cleaned it to bring out the sparkle. The original black dial and hands are in a wonderful condition. I have polished and kept the original crystal so not to interfere with the watch’s original integrity. Bearing the modern Yema “Y” logo, this timepiece is placed circa 1978-1979, when Yema was owned by Seiko. The beautiful ‘ghost’ bezel is razor sharp and turns bi-directionally as it should but has some slight but even signs of use on the perimeter. Scroll down for many photos, including some fun closeup snapshots. Feel free to ask us any questions.

EXTRA! Check out my own Localtime straps: Handmade from premium calf leather to my own specifications in Italy, they come in 5 sizes [lug width/buckle width]: 18/16, 19/16, 20/16, 21/18 and 22/18mm & 8 colours: tan, brown, dark brown, black, cinnamon brown, olive green, denim blue and grey blue. I sell these separately in my eBay store under eBay item number 401105271426.


YEMA [France]

Production Period

Late 1970's


Ref. T20556 Sous Marine


Time, Date, Diver's Bezel




Seiko Cal. 7N42C

Case Material

Stainless Steel

Case Back

Stainless Steel Screw-Down

Case Size

37mm case, 40mm including crown at 3h

Lug Width



Working With Warrantee

Last Known Service

Inspected & Approved by Localtime – January 2017


Free Worldwide


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