Page 87 - Chinese International Airmail to 1949
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3.2.2 Rate UOR 2: 1 Jan 1948 to 15 Jan 1948 (15 days). Surface first 20g $9,000 Air per 10g $30,000 13 Jan 1948 ‑ Shanghai to New Westminster, Canada. No backstamps. Single rate letter $9,000 + $30,000 = $39,000.
