This is a very difficult question to answer. There are over 70 Federal Duck stamps and each stamp has its own designer (artist).
There are also state duck stamps for the 50 states averaging about 25 stamps per state making somewhere in the neighbor hood of 1250 stamps.
You need to be more specific as to which stamp.
Paul B. Johnson
No. There is not an artist called Ruddy Duck :)
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.
This can take a while. From what I can tell, 1993 Duck stamps are worth a little less than twice their face value. The link below provides a catalog of all the state stamps and what you can purchase them for. Good luck!
"The Life Of Donald Duck" (published by Random House, 1941) On the book's cover it says: "This is my only Authorized Biography. (signed) d. duck"
Duck stamps are a highly collectible area of Philately. You would have to consult a good catalog to properly identify and value them. There is usually one available at your local library.
Carl Barks went by the good artist, the Good Duck Artist, the duck man, and the comic book king.
go duck yourself
Neglect. Ka opposite word
You buy the rubber duck, (which is sometimes available in the catalog, or you can unlock it through a code.) Then you go to the cove where nothing else but the duck is there. Go in the water area and swim.
Chuck
The three cent.