American Buffalo is a play by David Mamet, published in 1975 and dealing with themes of betrayal, greed and miscommunication. The story centers on Don, Bobby and Teach who are plotting to steal a rare coin back from a man whom Don sold from his junk shop. Originally getting Bobby to commit the heist, Don is later convinced to have the more experienced Teach do it. After Bobby returns to the store trying to sell a very similar coin but refusing to say where he got it, suspicions arise.