The US has issued dozens of George Washington stamps, many with a value of 3 cents. You will have to completely identify the stamp to find a value. A catalog, available in most libraries can help you determine the value.
50 cents!
$5.00 on Ebay
Depending on which version of the stamp, it is worth between $5.00 and $1,000,000.00.
Hundreds of uses for the peanut were described by George Washington Carver. It's worth looking into his writings.
3-5 cents
Firstly, the stamp is NOT from 1732, as that was the year Washington was born. Some people ask the moon for one, but a used specimen is only worth a few dollars.
There's no such coin. If you have a Franklin half with a liberty bell on the back it's worth about $6-7 for its silver content. If you have a Washington Carver commemorative half dollar it's worth $8-12.
52 cents
George Washington and Benjamin Franklin were the first two individuals. Washington was honored as the first President. Franklin was honored for being the first Postmaster of the United States.
$4,000
The George Washington dollar was minted in 2007, and is currently worth one dollar.
The 1940 10-cent stamp is worth $5.00 in mint condition and $1.65 used. (as of Jan. 2011)