Watch List notes:

British Tokens, Eighteenth Century Tokens, Middlesex, Political and Social series, Slave, halfpenny, undated, chained man kneeling, rev. clasped hands, MAY SLAVERY AND OPRESSION CEASE THROUGHOUT THE WORLD, edge THIS IS NOT A COIN BUT A MEDAL (DH.1037a), extremely fine, minor flan flaws, rare
*ex Baldwin's vault
Estimate: 100-150 GBP