60s vintage watch mens Omega Seamaster Cosmic steel ref. 136.017 SP manual wind Cal.613

From 60's this Omega Seamaster cosmic ref. 136.017 SP manual wind cal. 613, recently serviced by watchmaker...

Case:
o Stainless steel C-case with scratches and marks all over, ref. 136.017 - SP TOOL 107
o Fine condition with strong geometry
o 35mm without crown / 38mm lug to lug / 9mm tickness / 19mm lug width
o Plexiglass original with omega logo at center
o Original omega crown

Movement:
o Mechanical manual wind omega 613 - serviced by watchmaker on November 2025
(movement was disassembled, washed, lubricated)
date: quickset by repeated pulling the crown

Dial and Hands:
o Untouched with evident marks and signs, specifically some lines on the right side

Bracelet Material:
o New 19mm light brown  leather with generic buckle

Condition:
Overall in very good condition working condition, a great piece...

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