Watch List notes:

Commonwealth (1649-60), Halfcrown, a forgery, struck in white metal, '1652', 15.09g, 11h, m.m. sun (on obv. only) (cf. ESC 25 [429]; cf. N.2722; cf. S.3215), an evidently later striking from official dies, good fine.
provenance
C Adams, portion of collection sold privately by Cooke, prior to Spink auction (acquired 1 March 2005) [with his ticket]
Estimate: £40 - £60