The three Late Roman bronzes:
coin 1
Constantius II, FTR falling horseman (FH3) reverse; SMAN<theta> with M in upper left field
AE3 from the 9th officina at Antioch, RIC VII #191 rated C3 (very common)
coin 2
Constantius II; SPES REI-PVBLICE reverse; mint unclear.
AE3 on a reduced module, flan too small for the dies
coin 3

Constans, FL IVL CONSTANS NOB C
reverse GLORIA EXERCITVS; SMAL<gamma>
AE3 from 3rd officina at Alexandria; RIC VII 68 rated r2
all of these from Alexandria are less frequently seen than the other mints.