The numbers on cylinders match serial numbers. If you see an original with a different number on the cylinder that cylinder doesn't belong to that gun.
Educate me. Why does the cylinder say "Patent No." instead of "Serial No."???
Well, I'll be! I don't understand the "why" of it, but you are sure right. I just did a quick check on GunBroker and sure enough the so-called patent numbers on the cylinders match the serial numbers. Why would they call it the patent number? Strange! I just learned something new. Thanks!