cover 1921 20c. on 50c. and 2pi. on 5f. and 1922 1c. on 5c. to 1pi. on 5f. on 1922 registered unaddressed cover (195x140mm.) cancelled by "SHANG-HAI/CHINE" c.d.s. (31.12.22) - the day of closure of the P.O. Initialled AD. Y.88, 90, 91-100