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dennisthere was a sleeve that held the wonders of the world sleeves. it was white and had a green image of a pitcher. i sold mine a few years ago so i am going on memory.i think they were from 1953/4. i got about $60.00 for the 3 disks and a view master viewer of that era. they are fairly common on ebay. these are the only baseball issue that i have ever seen.