Single antique swing arm sash window lock, heavy cast brass, spring loaded both in the lock arm and in the keeper, This lock is very high commercial quality - possibly made for Railroad Coaches. Springs are strong and working. The spring loaded locking swing arm catch is locked in place when snapped into the unusual spring loaded keeper. The arm is released by pushing on the small finger press extending out on the left side as shown in close-up of the keeper. In... original polished finish. Lock base measures 2 1/4" wide x 15/16" deep. Keeper is 2 1/4" x 1". Arm extends 1 3/4" beyond base of lock. Lock is 1 1/2" high overall. Complete and in very good working condition.
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