Hi-
I had one of the multi subject cabinet cards like the ones posted here (mine is long since sold). Henry Moses and others on the Non Sports forum specifically stated it was not related to the Newsboy set. Henry had some excellent posts about mine (see link below). Unfortunately, the picture of mine does not show in the post but it was very similar to the ones that are graded. I think SGC just put Newsboy on the flip because whoever submitted it asked them to. That was a dumb move by SGC as it affects future knowledge so I do appreciate posts like yours and Henry's previous information that help to correct the record.
Alan
https://forum.vintagenonsports.com/p...light=sullivan