Watch List notes:

Richard II (1377-99), Halfgroat, Tower, Post-Treaty/type III mule, 2.26g, 11h, m.m. cross pattée, + edwardvs rex angl z franc, saltire stops, lombardic ns, rev. + posvi devm adivtorem mev', saltire stops, civitas london, reverse-barred ns (DIG PT6/1-ii; LAL obverse 21; Potter III-9/IIIa; Doubleday 659, same obverse die; Stewartby IV, 1197, same obverse die; N.1324 [1290/1323]; S.1684 [1640A/1683]), same dies as next, light tone, almost very fine, very rare thus.
provenance
D I Greenhalgh, part I, DNW 99, 14 March 2012, lot 58
Estimate: £400 - £600