vintage watch mens Yema plongee diver ref. 31 020 1 sous marine hand wind FE 140-1c

Case:
o Metal chromed with stainless steel back with marks all over ref. 31 020 1
o Fine condition with strong geometry
o 38.5mm without crown ao 40mm with crown guards / 40mm lug to lug / 12mm thickness / 19mm lug width

Movement:
o Mechanical manual wind Cupillard FE 140-1c (France Ebauches S.A.) - serviced by watchmaker on April 2026
(movement was disassembled, washed, lubricated) - photo of timegrapher

Dial and Hands:
o Lovely gradient golden, with some marks, namely the 11 o'clock index

Bracelet Material:
o 19mm racing black leather, with generic steel buckle

Conclusion / Condition:
Nice vintage french diver watch in good working condition..

please see photos as they are part of the description.
No box or pappers, no water proof test, sold as is, any question feel free for ask...
Keep in mind that it is a vintage watch, it is normal to be 1/2 minute early or late
wrist-treasure