World Series Proof Sheets
Not sure about saying that these proof sheets don't exist. You may want to do a bit more work on your own. I would suggest starting with Heritage Auctions, 2012 where they sold a number of these as a single lot (including 1932, 1935, 1938, and 1945 Cubs Wrigley Field). Legendary Auctions also has sold a number of these over the years as well..
Dave Grob
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