Coin magic is about visibility. Usually the coins you will borrow are going to be small and difficult to see. There is no problem in bringing your own coins.
Answered at 07:58pm on November 4th, 2013 by goatears (1 karma)
When doing money magic, it's always better to borrow the coins when possible. It seems more impossible if the trick is performed using their coin. Even if you have to borrow the coin and then switch it for the gimmick.
Answered at 12:49pm on October 29th, 2013 by s_branham (160 karma)