I just recently got this sharp example that still has some silvering
Aurelian
A.D. 275
Alexandria, Egypt
Potin Tetradrachm
19x21mm 7.9gm
OBV: A K L DOM AVPHΛIANOC CEB; Laureate and draped bust right.
REV: ETOVC Z (= regnal year 7) Dikaiosyne (Aequitas) standing left holding scales & cornucopiae.
RCV # 11695