Knife for I.D

[Royston]

Not really my line of collecting but I liked it. No doubt it will sit on my desk looking pretty for years.

Any ideas on where it is from ? Almost certain to be Europe.

11 1/2 inch overall with a 6 1/2 inch unsharpened blade, G.G is heavily stamped on the riccaso.

Hilt appears to be polished stone although I'm not sure what.

The rest is brass except for a silver crown which I cannot identify.

All comments welcome.

Regards
Roy