Unidentified Stamp

Unidentified Stamp
Crest: A bull’s head erased transfixed of an arrow
Motto: Prodesse quam conspici
Dimensions (height x width): 23mm x 17mm
Heraldic Charges: arrowbull's head
None of the names associated with the motto match the crest (Cocks, Lord Somers; Chamberlayne; Cookesey; Cox; Grote; Leigh) Fairbairn’s Crests provide 2 examples of the crest: plate 44/6 Walcott; and plate 273/6 Hayter