# Thumb 1 Thumb 2 Form Number Division Title Where Used EKU LKU Notes Revision Actions
551 3855 Application of sender for forwarding, delivery, or return of registered matter after dispatch
552 3856 Registry Circular of Inquiry 190_ DLS appears to have been dropped in favor of 1516
553 3856½ Circular -- Impossible to Delivery - sent to mailing office Requests instructions for disposal of undeliverable Registered Mail 1910 DLS replaced by 3858; Wawrukiewicz, Domestic ch. 36
554 3857 Circular to PM Major revision of registration process, eg, Registry letter bill to Registry Bill 18-- ASW
555 3857 Assignment of number blocks - for registered, insured, certified, and COD mail numbers assigned to person handling these items re numbers to be used numbering them 1972 ASW unused 1972
556 3858 Notice to the sender for Disposal of Undeliverable Registered Mail to be returned by sender with their instructions 1940 DLS 1944 DLS
557 3858 Notice of undeliverable or abandoned mail
558 3860 Notice of Arrival of C.O.D. notice to customer 1954 ASW 1963 DLS July 1955
559 3861 Loss claim filed by mailer
560 3861-A Notice to postmaster that a PS Form 3812 has been filed re loss of an insured mailing mailed to his/her PO 1988 ASW unused 1988