Watch List notes:

COMMEMORATIVE MEDALS, BRITISH HISTORICAL MEDALS, Victoria, Opening of Blackfriars Bridge and the Holborn Viaduct, Copper Medal, by G G Adams, for the Corporation of the City of London, crowned bust left, rev Londinia and Britannia flank views of the two bridges, 76.5mm, in case of issue (BHM 2906; Eimer 1604; Welch 11). Mint state.
only 400 specimens struck

Estimate: £220-280