The detail in the metalwork is amazing. But that eagle doesn't look American to me at all. It reminds me more of what you'd see in Germany or Austria, although it's a similar motif all over Europe.

It would be a huge risk to pay this much for it without seeing the hallmark. But given that laws in the UK are much more strict about using the word "silver", I'm going to assume that it is provably sterling silver, and that one just needs to ask the seller for the proof.

If I were able to afford really nice collectible sporrans, this one would be hot on my list!