Made in Germany or Italy
$50-$75
100-500 USD
This is probably a replica revolver produced in Italy.
italy
A revolver designed for a revolver cartridge cannot, but some revolvers are designed to fire rimless cartridges. S&W and others made revolvers in .45 ACP, the Ruger Speed Six/Security Six was available in 9mm Parabellum.. they use full or half moon clips to hold the rounds in place and load the cylinder, rather than the traditional method of loading a revolver.
None. I believe they may have made a prototype revolver back in the 1870's, but it was never produced.
The First bullet train was made in 1930
None. A bullet is a bullet, regardless of what material it's made from.
It might be eaiser to ask who in Beligum didn't make a revolver.
In the USA
Samuel Colt