G.E. Lozenge Shaped Push-Buttons

models: GE G-167 (Canadian), RCA 813, Westinghouse WR-366, WR-368

They are black in color, have a longitudinal slot in the bottom side which has a hole that passes through the slot at a right angle.

Dimensions are: length 1”, width 11/32”, height 9/32”, hole diameter 3/16”, slot width 5/32”, slot length 15/32”