Description:
Grover Master Plate for perforations. MP102/677 (1952) SR No. 6841 for Waterlow & Sons. Stamp description: S/C Stamp 4 Stamps across. Size of Stamp: 100mm x 20mm; No. of perforations: 66 x 13; ; Pitch of perforations: 1.5151+mm x 1.538+mm .