First issue? I think you mean mint - which means it's unused.
Many factors are involved in pricing the stamp: what country, condition of the stamp, which particular stamp (more than one stamp was issued in 1973) and whether it is new or used. Without more details it is not possible to answer your question properly.
In the United States it is US Scott Number 873. It was a ten cent value that was part of the Famous Americans Series. Booker T. Washington was the first black American to be honored on a U.S. postage stamp issue. His boyhood home was later pictured on a stamp as well.
Booker man was on the postage stamp because he was the founder of the first president of Tuskegee collage
Forever
Postage for ordinary first-class letters was 2 cents in 1928.
Cost of a postage stamp was dependent on the face value of the stamp and the country. The most common rate stamp is for First Class Mail. In 1989 it was 25 cents for the first ounce.
The current value for a standard postage stamp is 46 cents.
A first-class stamp is not the same as a forever stamp. A forever stamp holds the value of a first-class stamp regardless of how often the rate for first-class postage has increased. A first-class stamp only holds its face value.
If the stamp has not been devalued by the country of issue, yes, for postage in that country. It is only going to be worth face value which could be a fraction of its actual value in a few cases.
Cost of a postage stamp was dependant on the face value of the stamp. The most common rate stamp is for First Class Mail. In the United States 1956 that was 3 cents for the first ounce.
44 cents.
44 cents as of 2009
The F series stamps were issued in 1991. The postage stamp has a face value of 29 cents.