Overview: It's a first for the Pawn Stars when a WWII Enigma machine comes in the shop. Used by the Germans to send top-secret messages, can they crack the code to owning this incredibly rare artifact? Then, Corey and the Old Man check out a photo of Old West gunfighter Doc Holiday. The only known photograph showing Holiday as a dentist, will this negotiation be like pulling teeth? And later, Corey's big-spending ways have him strapped for cash. Can a financial adviser set him straight?