"Meanwhile, the gun that felled Dillinger, one of America's most notorious criminals, could bring in $12,000 when it goes on the block on July 22 - the 75th anniversary of Dillinger's death."

It's a bit of false advertising actually. The gun may have been carried at the Biograph by Captain Timothy O'Neill but it wasn't fired that night. Dillinger was killed by two FBI agents. One of the guns is now in Oklahoma.