Watch List notes:

NGC MS61-AU58 | William IV (1830-1837), Proof Maundy Set, 1831, Fourpence to Penny (ESC 2548 [2437]; Spink 3840), darkly toned, otherwise good extremely fine to practically as struck, in NGC holders, graded MS61 to AU58 (Cert. #5880299-009/010/011/012).
Provenance
"The Gemini Collection", Spink 'Stratos' Sale, 15 September 2020, lot 230 - wherein sold as a Proof set, as originally split from the set at this sale
Estimate: £400 - £450