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Todd Schultzin his April '06 auction. Group of 11 sold for just under $3900. although it included a Gehrig.
http://www.oldjudge.com/archive/200604/baseball/sets/92/
There are more than the 11 he sold, as I have a Frisch. I have seen Carleton (have one) more than any other player (about a half-dozen in the past 3-5 years), and a few each of O'Farrell and Bertell.
They aren't just stamped, but come on thicker, cardboard stock, not the paper thin regular version.