Diocletian, as Senior Augustus, 305-311/2. Argenteus (Silver, 19 mm, 3.41 g, 7 h), Serdica, May 305-July 306. D N DIOCLETI-ANO B S AVGG Laureate and mantled bust of Diocletian to right, holding olive branch in his right hand and mappa in his left. Rev. PROVID•DEORVM QUIES AVGG / S - Δ - F / •SM•SD• Providentia standing right, extending her right hand toward Quies, standing left, holding branch in her right hand and scepter in her left. RIC -. Unpublished and of great interest, apparently the second known example. Holed twice, otherwise, very fine.
From a European collection, formed before 2005.
RIC only knows this issue in gold and bronze, but there is a similar piece in the Berlin Collection reg. no. 18225746.