Watch List notes:

Victoria (1837-1901), Groat, 1857 mule with the obverse of the Threepence, young head left, rev. Britannia seated right, edge grained (ESC 3355 (1955) R6; S.3913), brilliant mint state and a great rarity, perhaps the finest specimen available to commerce, only two others known to be on the market and both in inferior condition, in NGC 'Waterbird' holder, graded PF65 (Cert. #4861777-021).
provenance
E R Lax collection, purchased from Baldwin, 1971
Estimate: £2,000.00 - £3,000.00