Watch List notes:

Hugh Percy, First Duke of Northumberland (1714-1786), The restoration of Alnwick Castle, 1766, J. Kirk's medal reproduced in black basalt (almost certainly by Wedgwood), bust of Percy r., rev. the Castle, 40mm. (cf BHM 106; Eimer 717), very fine and a rare survivor
For a similar piece, see A. H. Baldwin & Sons auction, 26 September 2012 (lot 1690).
(70-90 GBP)