What is the value of a 15 cent US James Buchanan postage stamp?

Answer 1

This is a common stamp which is easily obtainable. No stamp in good condition is worthless to a collector.

Mint US stamps are always worth their face value if one can find use for them for postage.

The minimum retail price for single stamps varies with the dealer but is around 15 to 25 cents.

Common mint stamps retail for about twice face if this is more than the minimum.

As for selling common stamps-- dealers do not buy them one at a time. They get them by buying collections or accumulations of thousands of

stamps. They usually have all the common stamps they can sell because they get them along with the scarcer stamps.

Answer 2

This stamp is still very common. Unusually well-centered mint copies might retail at 50 cents. Used copies are packet stamps-- too common to be sold individually as a rule.