The darker Austrian coin is not genuine. I'm not sure about it's origin and purpose. My silver Austrian coin on the right is. The reverse sides of both coins (see reply above) are almost exact, but the obverse coin on the left seems to be lacking in detail in the bust/head area. Jewelry piece maybe? CirCam? Pattern?
Both coins on the left lack detail in the shadowy areas. It's as if they are weak strikes. Not to say your coin is not genuine, but look above the arms. The area between the arms and the cape/flag should have the same wear. Just saying...Strange!
Re: Austrian coin I think the left coin maybe a copper PN61 "off metal strike", but I'm not sure. Need some expert advice on patterns.