70's vintage watch mens swiss Valgine automatic 25j Eta 2789 rare design steel

From 70's this unsual and rare Valgine, recently serviced by watchmaker... 

Case:
o   All in stainless steel with marks and scratches all over,  ref. 444 , inside "BREVET NO 506 829 / MOD. DEP. 48336"
o   Fine condition with strong geometry
o   39mm without crown / 40mm lug to lug  / 12mm tickness /  20mm lug width
o   New generic plexiglass 
o   Original crown

Movement:
o   Mechanical automatc Eta 2789 -  serviced by watchmaker on December 2022
(movement was disassembled, washed, lubricated) - photo of timegrapher
day in english: quickset
date: quickset 
 

Dial & Hands:
    o  Untouched blue and silver

Bracelet Material: 
  o  Vintage in stainless steel maximium wrist 18.5cm = 7.28inches
 
Conclusion / Condition: 
The Valgine brand may be strange to you, but it was born in 1900 in Switzerland and began with the artisanal manufacture of pocket watches, since 2001 it has managed the development, design and assembly of movements for watches by the Richard Mille brand, this valgine is a model that is difficult to find and very different, for the heavy steel case as well as its dial...

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...