Watch List notes:

BRITISH COINS. Coins from the Estate of the Late Dr Mark Blackburn. Edward I (1272-1307), Silver Voided Long Cross Penny, Bury St Edmunds mint, moneyer John, class VI (Eaglen 349; N 1001; S 1377). Toned, about very fine.
ex Colchester Hoard, 1969
bought Spink, 1971

Estimate: £50-70