England, Oxfordshire, countermark crown above / ROBINSON / OXFORD / CUTLER in four lines on obverse of British copper Halfpenny, 1807 (S-3781), Scott# 28.4C, Brunk-53735, countermark Fine, coin Fair.
References; J. Gavin Scott, British Countermarks on Copper and Bronze Coins
, Spink & Son, 1975, and Gregory G. Brunk, Merchant Countermarks on World Coins
, World Exonumia Press, 1989.
