Jaeger – LeCoultre
the Porthole in yellow gold
Start / | Jaeger – LeCoultre the porthole in yellow gold Story In 1951 Jaeger – LeCoultre introduced the Futurematic reference E501. Showing an unique feature at that time, these watches did not have a visible crown. Mounted on the back side of the case, only setting time was possible with it. Reference 501 was fitted with the automatic calibers 497, 497/1 or 827. All these calibers featured two hack mechanisms, one for the sub second when sliding the crown…