60s vintage watch dress flat Longines square ref. 7759 4 hand wind cal 428 serviced

from 1967 this fantastic classic Longines manual wind, recently serviced by watchmaker

Case:
o All in stainless, ref. 7759 4 serial 15 401543
o Fine condition with strong geometry
o 29mm without crown / 34mm lug to lug / 6mm thickness / 17mm lug width
o Plexiglass in good condition
o Original crown

Movement:
o Manual wind longines cal. 428 - serviced by watchmaker on June 2025 -
(movement was disassembled, washed, lubricated) - photo of timegrapher 

Dial and Hands:
o Untouched silver

Bracelet Material:
o New brown leather 17mm with generic chromed  buckle

Conclusion :
A very nice vintage model like a “Picture Frame” case, 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