The movement was recently cleaned and oiled by a watchmaker. The watch keeps good time.

It has some age related signs of wear: scratches, scuffs to the case. One mark on the dial where it appears a tool slipped (this is near and below the date window). 

The crystal has been replaced. The crown locks. Quick set date works. Winding works by motion of your wrist. The rotor turns freely. Bidirectional bezel rotates with click stops.

I am not the original owner (purchased this at auction last year) so only know the service history I have been involved with - the recent clean and oil as well as the crystal replacement. I would guess the watch is all original aside from the crystal.

I believe this watch dates to 1976.