What is the difference between caliber 6498-1 and 6498-2?
There are two variations of the ETA/Unitas 6498 including the 6498-1 and 6498-2. The -1 beats at 18,800vph while the -2 beats at 21,600vph and is COSC. The -2 typically costs more.
There are some differences in parts as well. This was outlined by lysanderxiii on wus:
The -2s (operating at 21,600 bph) have the following interchangeable with the slower -1s:Pallet BridgeStemSliding PinionWinding PinionCrown Wheel RingClick SpringYoke SpringSetting WheelIntermediate Setting WheelCase screw
The -2s (operating at 21,600 bph) have the following interchangeable with the slower -1s:
Have you noticed any other differences? Please comment below.