Not a rare or particularly beautiful coin but interesting for its dimensions: at 34-32mm and "only" 7.50g it is a quite unusually wide flan, the largest I have seen up until now.
MAGNENTIUS AE1 34mm 7.50g Double Maiorina (F+/VF)
AV: D N MAGNEN - TIVS P F AVG, Bare-headed, draped and cuirassed bust right.
REV: SALVS DD NN AVG ET CAES, around Large Chi-Rho, flanked by A-W
EXE: TRP Trier mint.
REF: RIC VIII Trier 318, 352-353AD.
Full large flan, full legends.