Watch List notes:

COMMEMORATIVE MEDALS, BRITISH MEDALS, Corporation of London Medals, Victoria, Golden Jubilee 1887, Copper Medal, by Sir Alfred Gilbert, for Heming & Co, London, struck by Messrs Pinches & Co, crowned and veiled bust of the Queen right, signed in monogram on truncation, rev olive wreath, 47mm (BDM II, 475, illustrated, but misattributed to George Frampton; and VII, 437, here misattributed to Gibbons). Choice extremely fine.
The portrait is very close to Gilbert's medal for the joint Jubilees of the Queen and the Art Union of London (BHM 3246; Eimer 1735; Beaulah 30), though the Queen here wears the small diamond crown

Estimate: £200-300