American Buffalo (1996)

A pair of crooks and their young intern plot the theft of a valuable Buffalo-head nickel. Most of the story takes place within the junky confines of Don Dubrow's second-hand store. And most of the story focuses on the machinations of these well-drawn characters who provide fascinating insight into the criminal mind as they ingeniously devise new ways to manipulate and aggravate each other. Based on a 1975 play by David Mamet.