70's vintage watch mens Yema automatic FE 3611 BIG steel 38mm RARE

From early 70's this unusual Yema automatic, recently serviced by watchmaker...

Case:
o   All in stainless steel brushed near mint condition, serial 836895
o   Fine condition with strong geometry
o   38mm without crown / 44mm lug to lug  / 10.5mm tickness /  18mm lug width
o   Original signed crown

Movement:
o   Mechanical automatic FE 3611 (cupillard 3611) -  serviced by watchmaker on March 2023
(movement was disassembled, washed, lubricated) - photo of timegrapher
date: set by changing 19.40-24h

 
Dial & Hands:
    o  Untouched gradiant brown, evident scraping in the center next to the hands.

Bracelet Material: 
  o  New generic bracelet in stainless steel brushed matching with case, maximium wirst 19.5cm = 7.67inches
 
Conclusion / Condition: 
Great vintage piece in good shape, unsual...

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...