T5 Pinkertons question (newbie)

[uthminsta]

Hey there everyone. I'm new here (first post ever), so go easy on me - I may be asking something that is obvious to many of you, as it seems there are plenty of experts hanging around.

But here's the deal. I'm trying to locate a T5 Pinkerton Lew Brockett cabinet. Well, more accurately, I'm trying to find PROOF of the card's existence. I'm aware that factory checklists for sets like this may not actually reflect production.

Does anyone have one?
Has anyone even seen one?
How do I find out how many, if any, were made?
For future reference (cuz I'm broke), what should I expect to pay for one?

I'm doing this because Louis was an ancestral relative of mine. So I wanna collect all of his cards... and any other memorabilia related to him. So far I have a Colgan's Chip, and a Helmar Stamp... and have been looking at a C46 Imperial Tobacco card as the "next step." But I'm not typically a prewar collector, I'm primarily a Topps baseball collector. That's why I figured I would ask around and see what the experts would have to add...

Any help?
Thanks
Aaron