Unidentified Stamp

Unidentified Stamp
Crest: A leopard rampant sable
Dimensions (height x width): 77mm x 65mm
Heraldic Charges: leopard
Notes:
Burke's General armory gives several possibilities; Horne (Argent a leopard rampant gules); Lincolne (Or a leopard rampant sable armed argent); Etheresset (Azure a leopard rampant or); and Marney, Essex (Gules a leopard rampant argent). Papworth adds Walton; Hun; Astley; and Lancaster. The most likely of these is Lincolne as the tincture of the leopard is sable.

Sources