The revolver you describe is a duplicate to one I once owned.
It is among those made in Belgium just befor the WW I era and brought home by returning Doughboys.
It is chambered for .38 Long Colt, but since the cylinder was bored through, it was found to take .38 Special ammunition also, and was so stamped. Incidentally, it will also take the .38 S&W cartridge, one of the few revolvers to do so. And, it will also accept .357 Magnum cartridges. The gun was made to look like a Colt Single Action Army so as to boost sales.
Many gunmakers made copies of American and British handguns. Most are well made and of good materials, but leave much to be desired.
If I were you, I'd keep mild .38 Short Colt or .38 Long Colt level ammunition for use in it, if any at all.
I gave $10.00 for mine as a kid, sold it for $50.00 as a wallhanger. I wouldn't put any money into it.
Please be advised there are NO safety devices of any kind on this revolver. You can index the cylinder so the firing pin rests between two rounds when at rest. But, this gun should be considered only a novelty.