Has anyone else ever seen these for sale? From what I can tell, they were printed from the late 50's through the mid 60's. They are also refered to as Salesman's Samples.

I picked up one years ago, because it had a friend of mine, Carlton Willey on it. It has the front of 3 1964 Topps cards on front, and the back is 2/3 ad for the upcomming issue, and the other 1/3 is the back of a sample card. Because the one I bought had the Mickey Mantle sample on back, I paid $250 for it. I bought it for the Carlton card, not the Mick!

But recently while surfing Beckett, I found it priced....for $50! I thought this was way low, considering I have NEVER seen another like it. You would think they would be more common to have a price like that.

So, have you seen these for sale anywhere?