Watch List notes:

BRITISH COINS. Coins from the Estate of the Late Dr Mark Blackburn. Henry III (1216-1272), Silver Voided Long Cross Penny, London mint, moneyer Nicole, class 5b with sceptre (N 992; S 1368). A double flip over striking showing elements of both obverse and reverse on both sides, very fine and very unusual.
ex Colchester Hoard, 1969
bought B A Seaby, 1971

Estimate: £50-70