These are from Howard Schwarzman’s “Limited Editions”. New, old stock, quite a find…..
Lubor Fiedler -the Austrian Alchemist- has brought many unusual items to the magic community and this was no different….. The magician shows a playing card with a black rectangular trap door on the back. He shows how the trap door works using a regular kitchen paring knife. two more trapdoor cards are stacked on top and again the function of the trapdoor is shown. One of the trapdoor cards is removed and a banknote is borrowed. The note is inserted between the two remaining trap door cards. Suddenly the knife can be seen having penetrated the banknote. The borrowed bill is removed and returned to the owner – it is completely undamaged…. Now the trap door cards are examined and to everyone’s surprise they are solid with no openings! Supplied with ornate cards, if you would prefer to perform this in Bicycle cards it would be easy to make your set based on the sample cards supplied.
This is a typical Fiedler effect with a clever method!
Please note that the remaining sets of cards have blue backs.