Box of Lefcaido. European, ca. 1936. Blocks numbered 0 ? 7 are placed in a small and handsome nickeled box with lift-out doors that spell out the word or name ?Lefcaido.? The magician instantly knows the order of the blocks inside the box without opening the doors despite the fact that the blocks and box are ungimmicked and may be thoroughly examined. With instructions. Length 6 ?". This effect was developed by Dr. Rohnstein for his friend Stanley Jaks. A complete description was published in Eperny?s Das Rohnsteinbuch, and in English in The Sphinx, Vol. 46, No. 6. Jaks? own apparatus for this trick is being offered in lot 116 as part of his close-up case, known as his Book of Tricks.