Dads thoughts:
I only think one of the coins is Roman – that is the middle pictures DSC 0444 and 0445.
0444 – is the Obverse of CONSTANTIUS II AD 348-361 depending on Size (if 18mm or smaller it is AD354-361). Legend is DN CONSTAN-TIVS PF AVG showing a Diadem, draped and cuirassed Bust right of the Emperor.
0445 – is the Reverse of coin Legend FEL TEMP REPARATIO (meaning Return of the Good Times) and depicts a soldier spearing a fallen Horseman. The mint mark is not discernible and thus could be one of many mints. Its SEARS(1988) numbers are 4003 and 4010, The 4010 is a common coin which has low market value in its condition which is worn to very worn. Even as an example of 4003 (e,g. some 22mm) would not attract much of a price I suspect.