I have actually seen repros of the 17th Ark Flag for sale throughout the months on ebay. Keep your eye out on keywords Arkansas Civil War and you might be suprised what you come up with. If memory serves me correct, I think it was the Van Dorne-style flag, but I may be misten. I do, however remember seeing it for bid once. The next time I see one I will try to remember to give you a shout.
I hope this helps.