These where issued by Quaker Oats in 1934-1935. There are two versions on this. The 1st which is a little hard to find is with the Babe with a Yankees cap. They put out a few of these then he was traded to the Braves. That is the more common one. Here are link to some that are listed on E-bay now. I have also added pictures of both.
http://www.ebay.com/sch/i.html?rt=nc...:MEFSRCHX:SRCH
www.baseballfinds.com