Description:
Grover Master Plate for perforations. MP102/426 (1938) SR No. 9830 for Bradbury Wilkinson & Co. Ltd. Stamp description: 2-Type 1 "D" per Head. Size of Stamp: 40mm x 24mm; No. of perforations: 27 x 16; Pins: 0.035; Pitch of perforations: 1.481mm x 1.5mm .