If you want to see some variants for 1956 that could drive you nuts see this site/link and type in 1956. See the photos of variants and then hit the list of variations. I think I have all the cropping differences shown and the listed variations including the team cards, but have not done the whole set in white and grey backs. While the diffrencials are not great, most of the big ticket items are in the mixed back cards
http://baseballcardvariationsguidebo...wordpress.com/