Watch List notes:

British Medals, William & Mary, Coronation 1689, struck white metal medal, by Jan Smeltzing, copying Bower's medal, conjoined busts r., he laureate, GVLIELMVS ET MARIA DG BRITANNORVM REX ET REGINA F D, rev. Perseus rescuing Andromeda from a sea-monster, PRETIUMQ ET CAVSA LABORIS, 38mm. (MI.664/28), nearly extremely fine but with traces of porosity, extremely rare
*bt. Spink & Son, pre-1986
MI. records the medal in silver only, whilst also noting the medal having die flaws as an explanation of its rarity. This specimen, however, shows little sign of them.
(150-200 GBP)