Watch List notes:

William III (1694-1702), Sixpence, 1697, third bust right, rev. late harp, large crowns, plain in angles, obliquely milled edge, 3.09g, 6h (Bull 1233; ESC 1566; Spink 3538), struck a touch off-centre, otherwise wondrously choice with 'bullseye' iridescent tone, much as struck.
Provenance
Warwick & Warwick, 15 June 2011, lot 216 - 'wherein slabbed MS65' [certification company unknown]
Estimate: £250 - £350