Olympia Calendar Vintage Wristwatch Hand-wound Mechanical Watch

Olympia Calendar Orient from the 1960s.
It features a manual winding movement with 17 jewels.
The material is stainless steel.
It comes with an aftermarket Jubilee bracelet.
The size is approximately 1.69 inches wide x 1.46 inches long.
The lug width is about 0.71 inches.
It is currently running without issues.
The service history is unknown, a service is recommended for daily use.
The wrist size is around 6.30 inches.
This Olympia Calendar swimmer model features an engine-turned bezel and a black dial.
The swimmer marking and yacht mark indicating waterproofness are firmly engraved.
This is a rare black dial model.
The bracelet has some scuffs and stretching.
The crown is a Seiko replacement.
The case and bezel show scuffs and dirt.
The crystal has scuffs and small scratches.