Watch List notes:

Henry VI restored, (Oct. 1470-Apr.1471), Penny, York, 0.74g, mm. lis, henricv [ ], g and key by bust, rev, civi tas [ ], quatrefoil at centre (N.1623; S.2088; Stewartby p.444), small and flat in parts, dark tone, fine and extremely rare.
Bt Studio Coins, December 2003
Estimate: £180.00 - £220.00