here's a nice example of this type for Gallienus
Gallienus
A.D. 267- 268
Alexandria, Egypt
Tetradrachm
20x21mm 8.0gm
AVT K PLI K GALLIHNOC CEB; Laureate, draped and cuirassed bust right.
REV: Eagle looking back with head left, holding wreath in beak; palm branch to left, to right, L-I-Є (date).
Emmett 3806