Billon, 22.3mm diameter, weight 3.69 grams.   IMP CCL TACITVS AVG His radiate, draped bust right.  Rv. AEQVITAS AVG  Aequitas standing left, holding scales and cornucopiae.  Sear RCV 3, 11766.  Some very light pitting and some adhesions, otherwise EF, and of reasonably good silver appearance.