Found in the left jacket pocket of the victim, Everett Gage. It is a receipt for pearl earrings made out to C. Galletta.

Achieving a 100% completion or a 5-star rating for the "Buyer Beware" case in L.A. Noire requires a comprehensive investigation of the crime scene, accurate interrogations of key witnesses and suspects, and minimal collateral damage during the pursuit. Case Number: #4 (The final Patrol desk case).

To reach 100% clue discovery for this case, you must find and inspect the following evidence:

Located in a trash can to the left of the Nunn Bush Shoes entrance. You must examine the serial number closely to trace it to Eagleson’s Gun Store.

Five spent rounds found on the sidewalk near the victim's body.

Obtained by speaking with the male witness on the street and then interviewing Clovis Galletta inside the shoe store. Interrogation Guide Buyer Beware | L.A. Noire Wiki | Fandom