Watch List notes:

Victoria (1837-1901), "Golden Jubilee", AR Medal, 1887, Upon the Foundation of the Imperial Institute, by T. Brock and J. Pinches, crowned, laureate and veiled head left, rev. Imperial Institute, ribbon to left, edge plain, 16.44g, 6h, 38.5mm. (Eimer 1737; BHM 3226), a pleasing extremely fine, a most interesting medal displaying an early prototype bust by Thomas Brock later modified for the 1893 Recoinage.
Provenance
M L Gray, Spink 251, 27-28 March 2018, lot 513,
JDS, by private treaty, 2012
Estimate: £120 - £160