Gallienus, Bi. antoninianus. Milan. 

IMP GALLIENVS AVG, radiate head right.
PROVID AVG, Providentia standing left, holding baton and sceptre, globe at foot

No mintmark 
Var of RIC V-1 (S), Milan 509A and Goebl 1360h (no mintmark).

Contributed by Richard Heinen, April 2021.