How much is this stamp worth First day issue 1968?

Answer 1

First Class postage was 32 cents beginning on January 1, 1995. The rate was increased from 29 cents on that date. It was in effect until the rate was increased to 33 cents on January 10, 1999.

Answer 2

{| |- | It will depend upon which of the two First Day Covers you have. There were two stamps issued in March of 1978. The value is $1 to $2, though the cachet (the picture on the envelope) can also affect value. |}

Answer 3

There isn't enough information to answer. You need to consult a postage stamp catalog that includes the First Day of Issue prices. Check your local library.