I have been hunting for this coin for a while and it turns out to be a lot more difficult than you can imagine. This is the coin for discussion: Overstruck over this particular coin: I'll be honest - this has obliterated most of the details from the original host coin and I cannot tell what the year and mintmark is. However, if you rotate the coin about 20 degrees clockwise, you should be able to see the figure "10". This design is only present in the German / Nazi era coinage. As of why this happened, I'm not too sure but I suspect this occured after the time when Austria was under German "unification". Austria would have been minting coins under the Reich regime and when this was over, some left over planchets and coins were used to strike new coins. Very interesting coinage and I reckon it's difficult to assemble a nice clear set of overstrike. While this is not a clear overstrike and I hope to get a better example, there is a better image found here: http://www.moneymuseum.com/moneymus...3C4AC6CD07?i=8&aid=8&gid=16&cid=47&pi=0&ps=10
Just in case you struggle to see the underlayer, I have rotated it to the right alignment. You should be able to see the figure "10" if you look carefully.
Was not easy to find the "original" in the first image, but the Money Museum link and your photo in #2 make it obvious. Interesting piece! Christian