Victoria (1837-1901), Proof Crown, 1887, by J E Boehm and Pistrucci, 'Jubilee' bust left, rev. St George and Dragon, edge milled, 28.36g, 12h (Spink 3921; ESC 2586 [297]; Stratos 238), deft cabinet friction across brilliant fields, an overlying and attractive 'gun metal' tone, the portrait framed by handsome cameoing, much as struck, rare thus