I'm sure that the serial no.s would certainly ID an Original Queen Anne model, however if one had a mind to do so, it wouldn't take much effort to figure out the range in the series to fabricate a machines ID plate, & you'd never know unless you happened to run across an identical "original" once you had a rusted out machine from the same series, you could duplicate all of the ornate trim pieces closely enough to fool an untrained average Joe.
The same thing happened a while ago in regards to the RC cola V-81 , someone made up a bunch of "patch-panels" in China that could be mig-welded onto a generic V-81 door & make it into a "rare" machine..that why it's wise to educate yourself by hanging out at this Site!