William III, proof Halfcrown, 1697B, Bristol, struck on a thick flan, 21.302g., laureate and draped bust right, the B below erased from the die, rev. larger shields, edge NONO (ESC 543A R6; S.3488), two tiny digs on reverse field, triangular pinhole on edge, nearly extremely fine, the only known specimen
William III, proof Halfcrown, 1697B, Bristol, struck on a thick flan, 21.302g., laureate and draped bust right, the B below erased from the die, rev. larger shields, edge NONO (ESC 543A R6; S.3488), two tiny digs on reverse field, triangular pinhole on edge, nearly extremely fine, the only known specimen

細節
William III, proof Halfcrown, 1697B, Bristol, struck on a thick flan, 21.302g., laureate and draped bust right, the B below erased from the die, rev. larger shields, edge NONO (ESC 543A R6; S.3488), two tiny digs on reverse field, triangular pinhole on edge, nearly extremely fine, the only known specimen
來源
A E Copp, private transaction 1887
J G Murdoch, Sotheby, 8 June 1903, lot 822
Adm. M Kerr, Sotheby, 23 July 1945
K R R Readhead, collection puchased by A H Baldwin, 1950
Purchased: Spink and Son, October 1988