Unidentified Stamp

Unidentified Stamp
Dimensions: 67mm x 54mm
Motto: Valet prudentia virtus
Crest: A cubit arm in armour with a serpent wound round it holding a spear in fess
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)
Impalement: Sable a greyhound courant between two bars argent (unidentified)

Sources