Scott Number 924 Mint can be purchased for 60 cents and used for 25 cents. A dealer might give you a nickel for a used one, but usually isn't going to be bothered purchasing single stamps.
The H stamp is worth 33 cents. Yes, you can add a 1 cent stamp to cover 34 cents worth of postage.
This stamp is called an F makeup. It is worth 4 cents. It was issued in 1991 along with the F stamp which had a value of 29 cents
No, it is worth 37 cents.
It is worth 15 cents.
44 cents in 2012
15 cents.
15 cents.
The stamp-postage value of a stamp is visible on the front of the stamp.
20 cents.
The C stamp came out in 1981. It has a face value of 20 cents.
25 cents.
If it says US Addresses Only it is good for 32 cents worth of postage. The Make Up stamp is worth 3 cents.