Extensive lot of 15. Unused with envelopes. c. 1950s. Interesting and clever birthday/greeting cards all with Hoppy's image. Sizes range from 4.5x5.5" to 6x7". Two with cast metal charms attached to design. Many mechanical designs. One with spinner and gameboard. Many die-cut/fold-out. Two with spinning dials to change inset photos of Hoppy. Scattered light age dust. All unused and Exc. An instant collection.