Page 52 - Chinese International Airmail to 1949
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2.1.4 CNAC to Calcutta, BOAC Horseshoe Route to Cairo, Surface to Europe
Rate 1: 5 Nov 1943 to 14 Mar 1944 (131 days). Surface first 20g $2 Air per 5g $5
10 Jan 1944 ‑ Chungking to London, England. No backstamps. The PAA double‑Atlantic route ceased on 4 Nov 1943 so the letter
could not be routed as per the sender’s instructions. Double rate letter $2 + 2 x $5 = $12.
Rate 3: 1 May 1944 to 23 Jan 1945 (268 days). Surface for letters first 20g $4, Postcards $2.40 Air per 5g for all mail $8
11 Jul 1944 ‑ Nanking to Dublin, Ireland. Written in Nanchenghsien on 4 Jun 1944. Censored in India , India, Egypt, UK and Ireland.
Air mail postcard rate $2.40 + $8.00 = $10.40.