I also noticed these, over the years some unusual scales have been produced often for the Tourist Market, Museums, etc. I did buy some pieces from this guy about 3 years ago about 6, 54mm Mounted Napoleonics they were so bad that I suspected they were recasts and sold them on. He has a great trick of having a kit with no paperwork then listing it with a picture from a different source.
"Caveat Emptor"