The magic world was made conscious of magical effects with chips by Erhard Liebenow around 1970. In this assortment of chips you will find four chips black on one side red on the other, a shell that is black, two red chips, one black chip, a black body chip with white on both sides, five chips black on both sides but with the addition of metal shims and a very special piece of brass which is an open cylinder with a covering lid also of brass that when the knob is pushed in and held it will cause a shim chip to adhere until the pressure is released on the knob.
The case is made with divisions to hold everything together neatly as for prearrangement of chip order. No instructions. All in very fine condition.