There was a 50¢ per ½ ounce air mail rate to New Zealand in effect from August 31, 1939 thru October 31, 1946. Currently, the number of solo uses of the $1 sheet stamp known on cover paying double the ½ ounce airmail rate to New Zealand is: 1. 

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Description: Air mail cover, dated June 25, 1942, with a solo $1 Prexie paying two times the air mail rate from Philadelphia, PA to Napier, New Zealand.

Owner/Source: Bob Hohertz web site.

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