FEUDAL FRANCE. Anjou, Charles I (1246-1285), billon Denier, 0.5g, 17mm, obverse; + CAROLVS COMES, large cross with Ω in first quarter and lis in second, reverse; ANDEGAVENSIS, monogram. D'Avant-1517, Roberts-4116, GF
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.