What country were you searching in?
Here's a little more info on the third coin:
[FONT="][h=4][URL="http://numismatics.org/ocre/id/ric.5.fl.40"]RIC V Florian 40[/URL][/h][/FONT]
[FONT="][URL="http://numismatics.org/collectionimages/19001949/1944/1944.100.33081.obv.width350.jpg"][/URL]![]()
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[FONT="]DateAD 276DenominationAntoninianusMintRomeObverseIMP C FLORIANVS AVG: Bust of Florian, radiate, draped, right or bust of Florian, radiate, draped, cuirassed, rightReverseSALVS AVG: Salus, draped, standing left, feeding out of patera in right hand serpent rising from altar and holding sceptre in left hand
Don......[/FONT]
The mint mark on the second coin appears to be from Thessalonica (versus Treveri); like this:
https://www.vcoins.com/en/stores/tr...8350_ad_thessalonica_tesb/830692/Default.aspx
Don.....