I missed this the first time around, fascinating stuff.
I'd have thought the color one was the fake, but the $15K says different.
Was the standup part of the color one advertised as homemade? It looks very much like the work of a kid with scissors and glue, while the standup bit of the black and white one is obviously a professionally made part.
I'm often amazed at the effort expended on some of the fakes. Finding a good enough source image to make a decent reprint, the actual printing, and making two die cut parts. Die cutting isn't cheap.
And while doing all that, they cheaped out and didn't bother with the green print.
Steve B