cover 1913 registered envelope (opened out for display) to New York (3.10 arrival) bearing on front and back 1c. vertical strips of five (2) and singles (2), a few straight edges or perf. faults, cancelled by oval "U.S. POSTAL AGENCY/R.D./SHANGHAI, CHINA" h.s. and showing "SHANGHAI (U.S. POSTAL AG'CY) CHINA/REGISTERED" double-ringed d.s. (4.9) in violet adjacent. Spectacular 12 cents registered rate franking. Photo