Arab Byzantine
Pseudo-Damascus
Appears to be an exact match to Milstein plate coin # 119 (obv and rev)
Also see : G & G Catalogue 2 # 122, 123 (obv). #122 (rev).
Standing emperor with moustache and pointed beard, palm left, Є right.
Large lower case M with serpents & pellets between uprights, and cross above flanked by stars.