6.5x9.5" cello-wrapped tray contains complete set of 36 die-cut valentines. By Paper Novelty Mfg. Co. © NPP Inc., 1966. Although of 1966 vintage, cards feature an older style and art reminiscent of the comic books of the Golden Age. Included is single "Special Card For Teacher." Cello wrapping has nice full-color images of Batman waving as Robin runs in bkg. Clear "window" showcases Joker and Batman valentines. Tray has two side panels heavily dented in and cello wrapping shows lt. wear but set remains sealed and contents are Mint as packaged. This set is extremely difficult to find still sealed, our consignor only having seen 2 sealed examples. Packaging is Fine/VF overall. From the Craig Warren Collection.