We list 23 of the rarest and most valuable of all stamps ever printed in postage stamp collecting rarity significantly increases the value of old stamps one penny black the first stamp in the world what better way to start than by paying homage to the first stamp in the world the one penny black stamp. easy to use world stamps catalogue including stamps values most popular countries advanced filtering by multiple parameters flexible keyword search experts support. Mauritius post office stamps value 38 million for a pair bottom line mauritius post office stamps the mauritius post office stamps were the first british empire stamps produced outside of great britain issued in 1847 only 27 are known to still exist and they are one of the most famous and sought after stamps in the world of philately. These stamp conventions take place all over the world and provide a place for philatelists to buy sell and value their stamps stamp dealers often list shows on their websites and you can check out sites for the american philatelic society aps or the american stamp dealers association asda as well to find a show near you. Stamps by country as one of the worlds largest stamp companies were interested in stamps from every corner of the world select your stamp area of interest