{| |- | This is Scott Number 1735. These are the first class stamps issued when the post office is not sure what new stamp value will be approved. They have a face value of 15 cents. They are still valid for postage within the US for 15 cents. |}
It is worth 15 cents.
The H series First Class Stamp is still valid for 33 cents worth of postage. So you would have to add 12 cents to it to mail a letter in 2012.
These are 15-cent stamps -- still good for 15 cents postage.
It is worth the original cost of the stamp.
A stamp is worth more unused
Assuming this is the brown seal note with the HAWAII stamp.... In average circulated condition, it's worth about $50 A nicer note can be worth $80 or more.
They are no longer being sold by the post office. They are still valid for 15 cents worth of postage.
The pink John Adams first appeared as part of the 1938 presidential series and was used until it was replaced in the 1954 series. It is still very common mint or used. The coil variety is somewhat scarcer but very common. The was a 2 cent stamp in the 1902 series, but it pictures Washington. At retail, it is worth around $8 for a nicely centered mint stamp and around 30 cents for a nice used one.
The A series stamp pictures an eagle. It has a face value of 15 cents.
As of 9/11 these bills are worth $10-$20 in circulated condition. In uncirculated condition they are worth $200 or more.
First you need to specified to country, the series, and the conditions of the stamp, and if it has ever been used or not. Consult an online catalog, or hard copy at your local library.
A 5-cent 1946 Roosevelt stamp is worth about $1, but it depends on the postmark and the design on the stamp. Some postmarks of this stamp could be worth $11 or more.