Timekeeping: The watch is running well and keeping good time for its age.
Crown: The crown does not always stay in the bottom (winding) position and springs out toward the setting position. This is a common issue with the setting lever, so would benefit from a service.
Seconds Hand: As is correct for this vintage caliber, the seconds hand is non-hacking—it continues to sweep when the crown is pulled out to set the time.
Service History: No recent service history is known. Given the crown issue, this watch is sold as needing a mechanical service.
Dial: Original matte black dial in great vintage condition. Rare "4:30" date window.
Case: Original 38mm (not including crown) octagonal stainless steel case with sharp lines. Shows signs of wear consistent with age. Case is in good condition for its age.
Crystal: I believe to be the original mineral glass - very worn.
Bracelet: No bracelet included.
Reference: A3645
Movement: Zenith Manufacture Automatic Caliber
Case Size: 38mm (excluding crown)
Era: Circa 1969-1972
Serial Number - Just about visible in the correct light, i believe it says 721D066 - See Pictures.
Delivery via RM Special Delivery - £12.99