I second what several others have said. First, it is an AE4, not an AE2. Second, it is very common. For an ancient coin variety, "a few hundred surviving examples" would be very common. Many collectors have varieties with only a few examples surviving. Also, a quick web search found a better example of that type offered for $12. A search of vcoins for DN ARCADIVS PF AVG found 33 examples with that legend. Include the usual sale sites when seeking coins. This page on late Roman AE has five examples of "VOT/V" for Arcadius: http://augustuscoins.com/ed/ricix/type29i.html Keep looking at junk boxes. Treasure awaits, but very rarely.
I have found plenty of enjoyment in attributing ancient coins and taking pictures. Picking through a junk box can have it's rewards but if you're hoping to cherry pick dealers to make a buck you may become disappointed.