1951 REGISTERED AIRMAIL MANCHESTER TO ONTARIO, CANADA KGVI 2/6 YELLOW-GREEN (SG476b), 4d ULTRAMARINE AND 6d PURPLE. Envelope sent airmail Manchester to Ontario, Canada KGVI 2/6 yellow-green (SG476b), 4d ultramarine (SG508) and 6d purple (SG570) very lightly cancelled. On reverse 'National Revenue Postal Branch' handstamp dated APR 11 1951. (Ref 143583).
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