Barrel Bridge Screws

Initially two screws are used to hold down the barrel bridge on the Model 92 movement.  The overwhelming majority of movements up to 9525901-9527500 are found with 2 barrel bridge screws.  From 9544701-9544900 on, we find 3 screws in the barrel bridge.  There are two short runs (9544501-9544600 and 9544601-9544700) between these two runs but at the moment, we can not say with certainty how many barrel bridge screws are used in these movements.  It has been documented that there are 6 runs previous to 9544701 that contain at least some movements with 3 barrel bridge screws.  It is interesting to note that most of these are hunting case movements.