I realize this isn't exactly what the OP wants to discuss, but it is at least related.
In WWI, the Brits were very short on handguns. Well we know that they had contracts with S&W and Colt to supply large frame revolvers chambered for the .455 Webley cartridge.
They also had contracts with consortiums in Spain to produce a clone of the S&W top break double action revolver, chambered of course for the .455. This isn't really surprising since their standard military issue revolver of the time was a top break double action revolver.
I've never seen one for sale locally. The ones I see on-line have surprisingly high asking prices.
Obviously the photo below is staged, possibly from a movie. Certainly not circa WWI. But it does show one of these DA Eibar Specials.
