Unidentified Stamp

Unidentified Stamp
Arms:
Sable on a chevron argent between in chief two griffins heads couped and in base a lion rampant an anchor between two estoiles (unidentified) impaling Sable a greyhound courant between two bars argent (unidentified)
Crest: A cubit arm in armour with a serpent wound round it holding a spear in fess
Motto: Valet prudentia virtus
Dimensions (height x width): 67mm x 54mm
Impalement: Sable a greyhound courant between two bars argent (unidentified)
Heraldic Charges: armanchorbars (2)chevron, on a, betweenestoiles (2)greyhoundgriffins heads (2)lion rampantserpentspear

Sources