Great Britain. Proof Maundy Set, 1831. S.3840; ESC-2437; KM-MDS79. William IV. Frosted portraits and mirror fields. Rare. In our opinion these are proofs. PCGS graded Fourpence, PL 62; PCGS graded Penny and Twopence PL 63; PCGS graded Threepence PL64. Estimated Value $500 - 600