Help A Newbie, ID 4

I believe the upper right is also a Constans AE3, RIC VIII 183, Siscia mint: CONSTANS P F AVG, diademed draped bust right/ VICTORIAE D D AVGG Q N N, two Victories facing each other holding wreaths, BSIS. Once again, I am having trouble seeing the mintmark, but I believe this may be the correct coin

you have some nice reverses there, the phoenix reverse I havent acquired yet and its a nice one. The 2 victories reverse has really great details. I am a big fan of the fallen horseman coins and the soldiers and standards coins also. overall a great set of coins nice set!

#3 is interesting as an example of a brief period following the death of Constantine the Great (MAX) where his sons each added MAX to their names at some mints. This is Constans. When it comes to value, condition is everything. These are rough and would not be highly marketable. $2-5 each perhaps but most dealers would pass at any price. The problem with most survivors of Late Roman uncleaned lots is that there are hundreds of low grade coins for every collector and many would prefer paying $10-20 and getting nicer looking coins. Dealers who have to factor in the hassle of tying up cash in stocks of coins may ask $20 for such coins on the theory that selling a couple would pay for the lot but the same dealers would be hesitant to offer anything for quantities of such coins unless they were part of a group that included things they really wanted. That means most of us have a supply that we have 'outgrown' but no way of moving them along for what we paid.