Another large group of stamps have numerals of value as their distinguishing feature. As examples of this we find, the early issues of Brazil and Hawaii, many stamps of Sweden, Netherlands, Denmark, etc., as well as the postage due stamps of many countries, including our own.
In other countries only inscriptions are used. This is especially the case with the Native States of India, in some of which as many as four languages are said to be em ployed on one stamp. These are interesting for their crude and curious designs but are not popular with collectors, probably because of our inability to read them.