Victoria (1837-1901), Victoria, Jubilee, 1887, The Imperial Insitute, gold medal by T. Brock and J. Pinches, published by Messrs Waterlow & Sons Ltd., 39mm (BHM 3226; E 1737). Good extremely fine, extremely rare (£350-400)

The footnote in BHM suggests that this medal struck in gold is possibly unique, another specimen is know in the Royal Collection