39 C.F.R. § 946.10 Record retention.
Title 39 - Postal Service
Records regarding property subject to this part will be retained for a period of 3 years following return of the property to its owner or a determination that the property is abandoned.
Title 39: Postal Service
PART 946—RULES OF PROCEDURE RELATING TO THE DISPOSITION OF STOLEN MAIL MATTER AND PROPERTY ACQUIRED BY THE POSTAL INSPECTION SERVICE FOR USE AS EVIDENCE
§ 946.10 Record retention.