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In 1957 Lionel came out a train set targeting girls. The locomotive and tender were pink, along with several other rail cars (gondolas, hoppers and a caboose). This set was produced only 1 year but appeared in the '57 and '58 catalogs. It was a total failure. Thus the poster was printed in 1957. I did find a listing on ebay. The seller is selling two of these posters, one in good shape the other with edge damage. He gives the poster dimensions as 44" by 74". Looking at his photo, it appears your poster is not cut off at the bottom. Currently he has one bid at $85.99, but as I stated above, the auction is for two posters, with one being in very good condition. I would put the link here, but once the auction closes and after a period of time, the link will not bring up this item. So here is the listing item number 170658861488 or do a search using his title 2 Lionel Trains Posters Large 44 x 74 . I hope this helps.