Scarce dated type struck at the Tower Mint during the combined reign of Queen Mary Tudor (first daughter of King Henry VIII) and King Philip of Spain.
Obverse: Facing busts of Philip and Mary, a crown above them divides date, within beaded inner circle, PHILIP · Z · MARIA · D · G · REX · ET · REGINA · ANG 1557, Philip and Mary King and Queen of England.
Reverse: Crowned harp flanked by crowned P and M, within beaded inner circle. Mintmark Rose at top, POSVIMVS DEVM ADIVTOREM NOSTRVM, We Have Made God Our Helper.
Certified by PCGS to F Detail Scratch (well blended).