I shouldn't make blanket statements like this, but I believe all reichsrevolvers of the kind I'm thinking of are antiques. They are usually capable of chambering and firing the 44 russian cartridge though it isn't strictly speaking the correct cartridge.
An easy way to sort them is, does the gun have a rounded ring on the muzzle or not?
Again - pictures and details will tell. It could be a worthless junker or a priceless unique heirloom, we don't know what you're looking at until we see pics.