Okay, since @TIF got me back here, here is the Caracalla version mentioned in the OP: Provincial Rome - Thrace Caracalla, r. 198-217 A.D. Hadrianopolis, AE 26, 25.88 x 11 grams; Obv.: AVT K M AVR CE ANTΩNEINOC. Laureate bust right Rev.: AΔRIANO-ΠOΛEITΩN. Pan standing right, with horns and legs of goat, holding crook next to head and lionskin fleece over left arm, left foot on panther lying on its back Ex. DC Collection