Probus - Alexandria - Year ? - Eagle wings open

potin/billon tetradrachm Obv:– A K M AVP PROBOC CEB, Laureate draped bust right Rev:– None, Eagle standing half left, head turned back, wings open, wreath in beak. Minted in Alexandria Egypt. (No sign of L or year letter) Year ?. Reference:– Milne -. Emmett -. Curtis -. BMC -. There is no sign of the L or the year letter on this coin. Unmarked coins are not known for Probus. It could be that both letters were clogged.