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warshawlaw I scored a couple of these recently. For those of you who are not clear on what I mean, the T5 Pinkerton cabinets had very attractive numbered photos that were used later on to make postcards. I know they are vintage items because I saw a few in the Burdick Collection when I was in NY earlier this month.
My question is this: what the heck are these things called? Is there an ACC classification that I'm not picking up on? Are they anywhere in the big books?