Unidentified Stamp

Unidentified Stamp
Crest: A demi lion gorged with a collar sable [or checky?] holding an escutcheon charged with a cross crosslet fitchy
Dimensions (height x width): 15mm x 15mm
Heraldic Charges: cross crossletescutcheonlion, demi-
Notes:
None of the crests illustrated in Fairbairn’s Crests match this stamp.