The first country to allow commercial printing of advertisements on the back of its stamps was New Zealand. The year was 1893 and almost 100 ads for everything from pills, pickles, tobacco and coal to chocolates and soap, were printed...
The Pacific Ocean island Kingdom of Tonga, Polynesia, went into the history books as the first country to issue self-adhesive stamps in 1963. The series, circular in shape, was printed on embossed gilt-foiled paper and commemorated the 1962 first issue...
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