FEUDAL FRANCE. Poitu, Alphonse (1241-1271), Silver Denier Tournois, 18mm, 0.9g, obverse; + ALFVNSVS COMES, cross, reverse; + PICTAVIENTIS, castle. D'Avant-2583, Roberts-5201, F
References;
Faustin Poey D’Avant, Monnaies Féodales de France , Graz, 1961.
James N. Roberts, The Silver Coins of Medieval France (476-1610 AD) , South Salem 1996.