Description:
Grover Master Plate for perforations. MP102/495 (1944) SR No. 9822-9850 for Sprague & Bradbury. Stamp description: Postage stamps. Size of Stamp: 27.6mm x 19.8mm; No. of perforations: 12 x 9; Pins: 0.043; Pitch of perforations: 2.3mm x 2.2mm .