Closeups of Serial Number
Positions
The Model 92 movement went through several changes in its lifetime. We have been able to identify seven variations so far. Click on the thumbnail to display a larger version of the photo. Click on the link next to the photo for a more detailed explanation of the variation.
Variation 1 Serial number under grade name
Closeups of Serial Number
Positions
Variation 2 Serial number next to barrel bridge
Closeups of Serial Number
Positions
Variation 3 Change from 2 to 3 barrel bridge screws.
Closeups of Barrel Bridge
Screw configurations.
Variation 4 Serial number moved to barrel bridge and hairspring stud changed from round to patented Waltham stud.
Variation 5 Case screws are moved and the "5 Positions" marking on railroad grades.
Closeups of Case
Screw Positioning
Variation 6 The regulator is changed from the Star Regulator to the Patented 08 Regulator and the click is changed from solid to split.
Closeups of
Regulators
Closeups of Clicks
Variation 7 A groove on the outer edge of the movement, next to the balance wheel is added.
