It looks good to me - that is a genuine old Dugan piece in my opinion. The shape is the berry bowl, part of a berry set (one large master and six small bowls) - it would be approx. 5 inches across, deep and round (exactly like yours).
I do not believe it is a modern repro because firstly, the iridescence is totally wrong for a recent reproduction. Secondly, the base glass colour is typical Dugan - ox-blood or fiery amethyst - that is not a colour that you would find in a repro. But, the real clincher, the one that says "yes, this is a genuine old piece of Classic Dugan Carnival" is the base. It has no iridescence on it whatsoever. Typically, most modern repros will have iridescence on them. Look at this article we wrote for wwwcga website - we show the base of the Mosser Mary Ann vase alongside the original old version.
http://www.carnivalglass.org/newbies/01.aspI believe that the Cherry repros were made by L.G. Wright, using the original old Dugan moulds (Wright bought a lot of old Dugan moulds - an experienced collector can easily spot the new versions).
You are also absolutely correct, Michael, that you are not likely to find a repro in Vienna. It is much more likely to be an old, original piece.
It's genuine. It's Dugan. It's beautiful - congratulations.