60s vintage watch mens Girard perregaux Gyromatic tonneau steel servicedThis is a mid 1960s Girard Perregaux Gyromatic, featuring a rare tonneau stainless steel case design that is exceptionally hard to find. The Gyromatic series introduced the worlds first bidirectional rotor movement, a revolutionary development that laid the foundation for modern automatic watch mechanisms. Case: o All in stainless steel profissional polished o Fine condition with strong geometry o 31mm without crown 39mm lug to lug 11mm tickness 19mm