39 C.F.R. § 946.7 Submission of claims.
Title 39 - Postal Service
Claims submitted pursuant to this part must be submitted on Postal Service Form 1503 which may be obtained from the Inspector in Charge who has custody of the property.
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
§ 946.7 Submission of claims.

