For sale : a vintage colonial style silver metal door knob escutcheon plate with a hole for a skeleton key. The manufacturer is unknown. The back side is stamped with the number 792.

Measurements are 2.5" x 13" x 3/16" thick. The hole for the knob shaft is 1/2" diameter. The hole for the skeleton key is 3/4" long and 5/16" across the round area. 

There are some light scratches, but otherwise it's in very good condition.