Constans I AE follis. Siscia. AD 348-350. 18 mm, 3.14 g.

D N CONSTANS PF AVG, pearl-diademed, draped and cuirassed bust right.
FEL TEMP REPARATIO, radiate phoenix standing right on rocky mound.

Symbol 7 in right field.
Mintmark HSIS (ASIS).

RIC VIII Siscia 247.

Although no officina H (7) is known for Siscia, the fact that the symbols 1,2,3 etc are linked to the officinae A, B, Gamma etc, 
and that the officina letter is H and this symbol is known as 
symbol 7, this is an ususual coin.

With permission of Victor Clark, constantinethegreatcoins.com.