Topps Vault "slick stock proof" - what's the story?

[TNP777]

I'm a sucker for the Topps Vault and will pick up anything Butler-related that comes from it. Today's mail brought a 1984 Topps Traded "Slick Stock Proof" card, which I thought might just be a blank-backed Tiffany card. That in itself would be a unique pickup, as the only blank-backed Topps cards I have are all on regular non-glossy card stock. That doesn't appear to be the case, though. The "card" itself is quite flimsy, appearing to have been printed on a thicker stock paper.

If any of you have knowledge of where in the printing process cards were printed on thicker paper stock, I'd love to hear about it.

 

[TNP777]

bump - still looking for info.

 

[inceptus]

I'll start by noting that I don't have any meaningful info on these. That being said, I do know that six or seven years ago, Topps sold a run of 1971 "slick" baseball high numbers. I collect "vintage" Mets and was fortunate enough to pick up the Gary Gentry, which I wrote about here a few years back: http://whomadethegrade.blogspot.com/search?q=slick

I still haven't solved the mystery of why these 1971 cards have fully finished backs, and why to date I haven't seen more than one of each card. I assume it was some kind of test, and like you, I'd love to know more.

(BTW, I love the photo in your signature. I've been collecting graded pre-war Brooklyn cards for a few years now, and I've almost got the T206 Superbas wrapped up. Now I'm getting rare-back disease-- just picked up my first Tolstoi a couple of weeks ago...)