Watch List notes:

The Isladulcie Collection | Henry IV or V, Light Coinage, Halfgroat, Class B, Tower, no additional marks, rev. nothing after POSVI, 1.79g, 10h, m.m. pierced cross pattée with pellet centre [on obv. only] (DIG 1/2; Potter III/III; North 1390; Spink 1769), peripheral softness, the portrait otherwise struck-up, fine thus and very rare.
provenance
D I Greenhalgh, part I, DNW 99, 14 March 2012, lot 66
Estimate: £300 - £500