Rob
Here is my Willetts card which has a Factory #42 overstrike. I show you this one since the overstrike is offset and clearly reveals that this card was originally printed with a Factory #30
back. The subjects in the 350/460 series (except the 6 super-prints) that were printed with SWEET CAPORAL 350-460 Factory #30 were never issued. Instead, American Litho. modified
them with the Factory #42 overprint in order to ship them to the Durham plant in North Carolina. We can only surmise that this was done due to the impending divesture of the American
Tobacco Co. in 1911.
TED Z