Hi Stu.
Hmmmm. From the photos of the back of the flask, it does look old. I have no idea how old. LOL The wire decoration is interesting. Don't believe I've seen this on another. The tiny punch work on the brass on the rear of the spout reminds me of Moroccan. My only guess is that it was made somewhere in the Balkans.
But it is very decorative - and sounds like a real bargain. It's nice to hit a home run every once in a while. LOL Anyway, nice flask addition. As Kubur mentioned, any ID of the coins might give us a better idea of the origin.
Rick