Certina oversize ref. 860.3510.25 hand wind 28-10 gold pl Thin vintage 60s

Case:
o   Gold plated bushed never polished with back case in stainless steel
o    Fine condition with strong geometry
o   38.5mm without crown / 40mm lug to lug  / 8.5mm thickness / 20mm lug width 
o   Original crown 
o   Original plexiglass in good condition

Movement:
o   Mechanical manual wind certina 28-10  -  working very well - photo of timegrapher
 
 
Dial & Hands:
    o  Untouched gray in good condition

Bracelet Material: 
  o  Vintage light brown leather 20mm  with generic golden buckle
 
Conclusion / Condition: 
In mint condition, very elegant watch and rare,jumbo size 

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