Update (9/26): these coins are now out of stock — special thanks to everyone who participated in this pre-order challenge!
Anyone who has listened to 99% Invisible likely knows that we have a long history with challenge coins, starting with an episode produced years ago about these curious collectibles — this time, we created a coin to to go with your copy of The 99% Invisible City.
Shortly after our Coin Check episode aired, 99% Invisible debuted its first challenge coin with a series of symbols representing different aspects of 99pi as well as specific stories that had aired to date.
This time around, coins were shipped out to 10,000 fortunate individuals who pre-ordered the book (thanks again, everyone!), the first 5,000 for free courtesy of our publisher, HMH, and the next 5,000 with a flat-rate shipping-and-handling charge.