Blank Backs... on the wrong stock
 

I collect Blank backs for pretty much all Topps vintage, they are a fun complement to a set and usually pretty cheap. Many of them are misadvertised, the vast majority are just from sheets that for one reason or another didn't get finished. They are usually not proofs, or samples, or "1/1".

Some of the cooler ones though, are not from normal production. Flipping through a stack of them I re-discovered this Albie Pearson I have form 1963. Topps didn't use this stock in 1963, they wouldn't use something like it until 1971, but they did use an at least similar gray stock in 1962. It stands out form most 1963 blank backs that are on the proper stock. Presumably it is either from a sheet that was unfinished and scrapped when they used the wrong stock by accident, or it is from pre-production as an internal or print shop sample.

Let's seem other blank backs from the wrong stock. There are others floating around.

This one is a little strange and not 100% sure if it is the correct card stock or not. I measured it with a caliper and it is the correct thickness. I have noticed with the 69 Topps cards the card stock color on the back varies a little. I need to get a few cheap 69s with the white and cream(?) colored back. If someone has a few beaters cheap PM me.

Aaron has a white and a cream issued stock. Looks like the cream to me in the scan.