1961
4 cents.
four cents
If uncancelled and used as postage it is worth (surprise) 4 cents.As a collectible stamp its value will depend entirely on condition, which must be determined by direct observation by an expert in stamps.
yas
In good condition they would have a value of about 15 cents. That means that it is the cost of cataloging and storing the stamp and a dealer would not be interested in buying it. Consult a stamp catalog to more carefully identify and value them.
yes
4 cents
All U.S. stamps since the Civil War can still be used to mail letters and packages. So a 4 cent stamp is worth 4 cents today. If the stamp is old you can check in the catalogs to determine collector value. Few stamps issued since 1950 have significant collector value.
2012
4 cents. Put it on your next letter.
The US Post Office continues to make 4 cent stamps today. 4 cent stamps were issued to cover the first class rate of postage from 8/1/58 to 1/6/63.