Description:
Grover Master Plate for perforations. MP102/473 (1942) SR No. 5039 for Harrison Stationery Office. Stamp description: (G) Reel stamps. Size of Stamp: .8" x .95"; No. of perforations: 15 x 17; Pins: 0.035; Pitch of perforations: .0533" x .0558" .