Wittnauer AllProof
Introduced 1918; produced in various case styles into the 1940s. Widely cited as one of the earliest wristwatches marketed as simultaneously waterproof, shockproof, and antimagnetic.
2 references
“Differs” marks a spec with different recorded values. — means not recorded.
| Spec | AllProof (Staybrite/Gallet case) Jimmie Mattern-era AllProof, c. 1933 | AllProof Contracid Cal. 56 WWII-era Contracid stainless steel |
|---|---|---|
| Case size | 28 mm | Not recorded |
| Case Differs | stainless steel (Staybrite), round | stainless steel, round |
| Case maker | Gallet (case supplier, per Staybrite Brevet Gallet case marking) | Not recorded |
| Crystal | acrylic | acrylic |
| Caliber | Not recorded | Wittnauer Cal. 56 |
| Movement maker | Not recorded | Wittnauer |
| Movement type | Manual | Manual |
| Dial | silver | Not recorded |
| Produced Differs | 1930–1936 | 1939–1945 |