Titanium Bezel | PVD-Coated Case | Rare Collectible
The Citizen Helmet Automatic Ref. 4-650972K is a bold statement from the golden era of Japanese watchmaking. Its distinctive helmet-shaped case and brushed titanium bezel encapsulate the futuristic design language of the 1970s. The deep gold dial, day-date display, and 21-jewel automatic movement make it a perfect example of Citizen’s innovative spirit during a time when Japanese watchmaking was redefining global standards.
What sets this model apart is the PVD-coated case—a rarity in vintage Citizen pieces—paired with its unique case geometry and mechanical durability. The Helmet series earned its cult status among collectors for combining experimental design with proven reliability.
| Brand | Citizen |
| Model | Helmet Automatic |
| Reference | 4-650972K |
| Movement | Automatic, 21 Jewels |
| Case Diameter | 42 mm (approx.) |
| Case Material | Stainless Steel with PVD Coating & Titanium Bezel |
| Dial Color | Gold Sunburst |
| Crystal | Acrylic |
| Strap | 18mm Black Leather Strap |
| Functions | Hours, Minutes, Seconds, Day, Date |
| Water Resistance | Parawater (Vintage, Not Rated) |
| Country of Origin | Japan |