It's not pre-war, but I think it's kinda cool.
Here's the description from when I bought it. Not sure how much of it is REA hyperbole, but nonetheless the piece is neat.
"color-process proof sheet from the 1968 Topps set consisting of forty-four cards, including the key rookie card of Nolan Ryan and Hall of Famers Hank Aaron, Joe Morgan, Tony Perez, and Carl Yastrzemski. Printed on a thick paper stock (similar to vinyl), the sheet is arranged in four rows of eleven cards with large margins on top and bottom, the latter of which includes black, blue, magenta, and yellow color spectrum lines. Crop marks are also visible in all four margins. All but one of the cards appear as they would in final production when viewed from the front; the Yastrzemski checklist, however, is missing all of the black text which would normally appear in the checklist portion of the card, suggesting that the offered sheet may have been one press run short of a final production version. The back of the sheet is blank. These sheets were used by the printer for the purpose of checking colors, registration, and generally proofing the cards before final production began. Bright and clean, both front and back, with a small, almost imperceptible, tear along the bottom edge and a chip out of the upper right corner, neither of which detracts from the overall presentation. The Nolan Ryan rookie card, which is situated in the lower left corner of the sheet, displays exceptionally well and is an ideal highlight. Dimensions: 21 x 28 inches.
