Page 98 - Chinese International Airmail to 1949
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3.3.3 Gold $ Rate UOR 13: 12 Dec 1948 to 31 Dec 1948 (20 days).
Surface first 20g $4 Air per 10g $14
13 Dec 1948 ‑ Shanghai to Berne, Switzerland. No backstamps. Single rate letter $4 + $14 = $18.
24 Dec 1948 ‑ Canton to Montreal, Canada. Canton backstamp (25 Dec). Single rate letter $4 + $14 = $18.
