Vintage 1977 Citizen Challenge Diver 150M Date 52-0110 Automatic 40mm

Stunning Citizen Challenge Divers watch from April of 1977. Here is the famous Citizen Challenge Diver 52-0110. It was first produced in 1977, it was a direct rival to the Seiko Turtle 6306/6309 that were produced during the same era. The popularity and production of the Seiko Turtle far exceeded This Citizen, making finding one of these in good condition rear today. 
 
Fitted with the Citizen Caliber 8210, a 21 jewel movement beating at 21600 bph. This movement doesn't hack however it can be hand wound and has a quick set date feature. This movement is one of the most durable and robust movement ever produced by Citizen and it is famous to work very stable even when not serviced for many years. 
 
Bi-directional friction (no click) bezel with black aluminum insert and big round luminous pip in the 12 o'clock position. Quickset date works perfectly, screw down crown silky smooth, keeps great time but service history unknown (has two service marks inside case back). This Watch is in very good condition, it does show normal signs of use and age but no abuse, bad knocks or tool marks. All factory original parts, factory original finish on case (not re-polished). Dial in remarkable condishion with all orinal Citizen green lume, in the last photo you can see some history of hands rubbing on dial. Brand new Strap fitted.
 
Keeping good Vintage Time, Date change as it should inclding quick-set. Screw crown is also working as it should. Service History Unknown. Seals are Original and old, so not currently waterproof. 
 
Please study the photos and video carefully as they show the condition of the watch in more detail.
 
Owning a Vintage Watch:
 
Mechanical watches do not keep perfect time like a battery-powered watch. In addition, they do require service occasionally.
Since these pieces are vintage or pre-owned, please expect wear and patina from past usage and age.
If dropped, mishandled or otherwise abused, the movement or other parts of the watch can be damaged. Please handle with care. We hope you enjoy this item and wear it in good health for years to come!