~~~ see it, please.

At this point I have no idea of what the reverse of '6' is or if there is even a denomination. The CG entry does not mention any.

I am also curious as to why the '6' image has the same CG number as my entry... and, what does "Additional Images" mean (are there more CG images somewhere within CG?) -- and what exactpy does "proof" refer to?

There is a book; NICE (France) casinos... and maybe the image is from there, if anyone knows?