That would by my assumption too. The fact that the same dugout pose was used for at least three different purposes suggests that the image was not exclusive to one company but was licensed (or just pirated) for multiple uses.
I got mine on eBay so long ago that I paid for it with a
check. It was $25 including shipping. I seriously doubt anyone would fake something that cheap in crap condition.
I am not surprised that the oddball early cards and card-like paper collectibles of JR are rising given how the mainstream issues skyrocketed. IMO he is one of the most significant figures of 20th century America, so if the Topps and Bowman products are out of reach, you downshift to something else so you can have a career-contemporary JR card. Finding one of the early JR items for sale nowadays is a challenge. I haven't seen this 1949 All Star Photo Pack for sale in a while:
