There are far too many of them out there to be considered salesman's samples or novelties as some people believe them to be.
As proof that they were used, they do suffer damage, primarily about their mouth.
The irons of some reproductions have the logo stamped on both sides, but this can't be relied upon as a foolproof identification of the plane's originality since there are a lot of unused legitimate #1 irons out there and it's very easy to switch the reproduction iron with an original one.
The castings of the reproductions are coarser than on the originals, but unless you've seen an original, you really don't have any idea what the correct texture is.
The earliest models have an I-shaped, or H-shaped (depending upon how it's viewed) receiving area for the frog.
Subsequent models have the broad and flat receiving area. A smooth plane, according to some Stanley propaganda "is used for finishing or smoothing off flat surfaces.
So, if you have a plane that's one-half inch shorter or longer than what's mentioned here, don't go thinking that you have some ultra-rare version of the tool.
The screws used to secure the frog to the bottom casting actually poke through the sole!
It never has a number cast on it, nor was it ever provided a lateral adjustment lever.
The plane always has a solid brass nut for the iron's depth adjustment; i.e., the brass nut does not have the hollow depression that is typically found on the nuts used on the larger bench planes.
Bailey had experimented with several designs, but finally settled upon a style that is still being manufactured, with minor modification, today.
This plane was designed to smooth small areas and was found practical by many since it can be used with one hand, much like a block plane is.