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2. Definitive Stamp
A definitive stamp is published year after
year, and the amount created is not
covered.
These stamps issue in a wide variety of
categories (e.g., 2 cents, 5. USD) and
provide a plentiful chain of images,
including animals, famous persons
3. Forever Stamps
The USPS launched the Forever stamp in
2007. A forever stamp prices the same as a
regular first-class absolute stamp.
However, it may be applied forever as first-
class postage on regular envelopes
measuring one ounce or less.
4. Commemorative Stamps
Typically, every commemorative stamp
has a restricted stock run and is
marketed for only 1 year.
Although usable as postage,
commemorative stamps usually are held
by authorities and given privately on the
internet and also in the auctions
5. Semipostal Stamps
Semipostal stamps are “issued and
marketed by the Postal Service, at a
premium, in sequence to further grant
funding for a cause”
Thus, an ultimate first-class stamp may
be obtained for 45 cents, but a first-class
semipostal prices 55 cents.