Watch List notes:

Richard III, (1483-85), Groat, London, XXII, 2.86g, mm. boar’s head 1/uncertain, edward di gra rex angl z franc, saltire stops, fleurs on all cusps, pellet below bust, rev, posvi etc, saltire stops, civi tas lon don (N.1672; S.2155; Stewartby p.434, II), corroded, fair.
Shirley-Fox bequest 1939A gift from C E Blunt, 1987The reverse mark could possibly be a boar’s head
Estimate: £300.00 - £400.00