Watch List notes:

The Isladulcie Collection | Henry V (1413-1422), Light Coinage, Halfgroats, Tower (2), Class E, broken annulet to left of crown, mullet on breast, rev. quatrefoil after POSVI, single and double saltire stops, 1.74g, 7h, m.m. pierced cross [on obv. only] (North 1391b; Spink 1773), fair to fine; another, Class E/G mule, mullet on neck, no marks by crown, F over Z in ...ANGL Z F..., rev. as before, 1.88g, 4h, m.m. pierced cross [on obv. only] (DIG E1/G6; North 1393; Spink 1773/1775), small edge chip, otherwise fine, very rare, a good pair (2).
provenance
i) Noble Numismatics, June 2005 [via M Senior]
ii) D I Greenhalgh, part III, DNW 106, 6 February 2013, lot 158
,
See Galata's Guide to Medieval Half-Groats, Class G, DIG 2 (Class E DIG 1) obv.; and Class G DIG 6 rev. this coin.
Estimate: £250 - £350