Thank you Mr. Kaufman. The Problem with the book of Hofsinzer is that its age of print is 1909-1910. The First time in print ive found the efect is in 1868 in Robert Houdins book (Sympathetic Cards). But im looking for earliers references, i dont have read the books of Ponsin, Mieg... and i dont have them so if anyone knows any earlier reference and can help me it will be great, im also interested in other references of that effect in the books of 19 century (Sachs, Hoffman, Roterberg...)
Thank you very much, and excuse me for my English.