Unidentified Stamp

Unidentified Stamp
Arms:
A lion rampant and in chief two fishes hauriant holding in their mouths an annulet
Crest: A cap
Dimensions (height x width): 57mm x 47mm
Heraldic Charges: annuletcapchief, on afishes (2)lion rampant
Notes:
This may be a Continental stamp, although the book on which it was found was published in England.

Sources