The Paradox Box Optical Illusions Puzzling Pictures Verbal Diversions

The Paradox Box Optical Illusions Puzzling Pictures Verbal Diversions This is listed on the back of the box: set of optical illusion cards & more. 23 full color cards, including 4 cards w/folds, cut-outs or moving parts. 5 B&W cards. 3 "hold-to-the-light" images. A reproduction of a Spectropia, a color booklet of spectacular "after-image" pictures. A little anthology of verbal paradoxes and words at play. THIS IS NOT A COMPLETE SET: This is what is in the box: I counted 23 cards, A reproduction of a Spectropia, a color booklet of spectacular "after-image" pictures, 4 cards w/folds, cut-outs or moving parts. There's also one blank postcard-carte postale, a few of the "dark-to light" image cards, one b&w card. Some of the cards are made of paper also. The box shows wear with some splits on the sides. All of the contents are pre-owned, overall in good condition, some may have some creases - sold as is.