Mailing Standards of the United States Postal Service - International Mail Manual > 7 Treatment of Inbound Mail > 750 Extra Services
A number on a parcel is not sufficient evidence of insurance. An insurance endorsement is also required.
The following are insurance endorsements that may appear on inbound insured parcels, depending on the language of the country of origin:
Deliver international insured parcels in accordance with DMM 503 and POM 814.2.
For detailed information concerning indemnity claims and payments for loss, damage, or missing contents for insured parcels, see 930.