A Gaffed Double Sided Quarter Being able to control the outcome of a coin flip is one of those essential mechanics that every coin magician needs to have in their bag of tricks. While swaps, drops, and palm changes are all fine and good, sometimes you just want a double-sided quarter to make it easier, while you focus on other elements of the routine. A Quarter That Always Comes Up Tails Both sides of this coin always flip as tails. This is handy for controlling the outcome of a flip. Just don’t pass them out for inspection or try to slide one into a vending machine.