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In order to increase its income, the German Post in the Ottoman Empire printed special stamped envelopes on order for commercial entities in Jaffa and Jerusalem, such as the German Bank and the Jerusalem Warte newspaper.
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In August 1924, Mongolia issued its first postage stamps.

To prepare the printing plate, a single stamp plate must be produced and duplicated with as much precision as the number of copies required to print an entire stamp sheet. The process of duplicating a single stamp is susceptible to errors, resulting in copies that differ slightly from the original.

A page of stamps from a booklet, which often includes a diverse mix of different stamps and advertising labels. The booklet page is designed to facilitate the convenient sale of stamps in appropriate denominations, while attempting to assemble stamps that complement each other at a round price and are convenient for purchase by mail.

An envelope sent on the island of Trinidad documents an attempt by the local charity to collect donations for the Red Cross during World War I. The course of events turned this activity into a philatelic curiosity.