China. (Hong Kong). 1935. Registered Air Mail envelope addressed to 'c/o Chinese Post Office, Nanning' bearing Hong Kong SG 121, 5c violet and SG 134, 5c green and indigo tied by Victoria/ Hong Kong double ring '6th May' endorsed 'By First Official Transmission 'Air Mail' Canton/ Nanning via The Canton-Kinngchow-Pakhoi-Nanning Air Line S/W/A/C.' forwarded from Canton bearing China SG 397, 4c green (2) and SG 422, 15c blue-green (2) tied by Canton date stamp with framed hand-struck 'R/ Canton (China) in red on face, routed via Shanghai, Paknoi and Linngshan '23/5' with Nanning receiver. Scarce item.