1938 12c PRINTED MATTER RATE TO EUROPE

Addressed to HOLLAND. Large "PRINTED MATTER" advertising envelope
franked with 12c Air Mail stamp, postage for 150 grams maximum weight (50 grams per 4c).
Maximum allowable printed weight at 2 kilograms except for the use of the blind,
at 5 kilograms at a rate of 2c per kilogram.