The first coin is probably a VALENTINIAN I due to the length of the partially visible legend on the obverse which appears much longer than the shorter version a VALENS would have i.e. DN VALENTINI-ANVS PF AVG versus DN VALEN-S PF AVG.
The second coin is not a Constantine II but his half brother CONSTANS as the obverse legend shows [FL] IVL CONSTANS NOB CAE and as the reverse shows a mintmark of •TRS• this is a TRIER, Germany minted coin from the Secundi (Second) Workshop from AD 337-340 listed as a Roman Imperial Coinage (RIC) book VOL VIII TR 60.
The VRBS ROMA coin looks like it is also a TRIER mint with the mark TR•P coming from the PRIMUS (Primary) workshop and therefore minted AD 332-333.