Constantine II as Caesar, Æ3, (3.17g) 322 AD, Trier Mint, 

CONSTANTINVS IVN NOB C Laureate, bust left, wearing trabea, holding Victory on globe and sceptre.
BEATA TRANQVILLITAS, globe on altar inscribed VO-TIS XX, three stars above.

Mintmark dot STR crescent. 
RIC VII Trier 410.

Contributed by George Clegg (biggyg2 +), February, 2009