FEUDAL FRANCE. Maine, Herbert I, "the Wake-Dog" (1015-1036), Silver Denier, Maine mint, 1.1g, 20mm, Obverse; + COMES CENOMANNIS, monogram, Reverse; + SIGNVM DEI VIVIS, cross with pellets in first two quarters, an A and inverted Ω in 3rd & 4th quarters. D'Avant-1546, Roberts-4121, VF
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.