There were three 6 cent Christmas stamps. They have the Scott catalog numbers 1363, 1384, and 1414. They all have a catalog value of 20 cents, mint or used.
Six cents.
The 1991 Christmas stamps issued by the United States in a set of six different designs were not denominated. Even though no face value is printed, the stamp is still worth 29 cents postage.
This stamp is Scott # 1391. It has a catalog value of 20 cents mint or used.
If memory serves, it is the oversized, mainly black and white stamp you are asking about. If so, sorry to say, but you can use it on a letter. If it is used, even less value.
{| |- | I don't find a 6 cent Wildlife Conservation stamp, though there is an 8 cent set. You can purchase these for 20 cents used or mint from a dealer. This minimum value indicates that it has no real value. Dealers typically will purchase stamps at around 25% of the catalog value. Consult a stamp catalog such as Scott's, for a description on how stamps are rated and graded. |}
The value of a six pence stamp will depend on the year of the stamp, and the condition of the stamp.
The cost of a first class postage stamp in the 60's started at 4 cents. It went to 5 cents in January 1963 and then to six cents in January of 1968.
6 dimes have a face value of 60 cents.
Cost of a postage stamp was dependent on the face value of the stamp. The most common rate stamp is for First Class Mail. In the United States 1977 that was 13 cents for the first ounce.
The currency amount $45.00 is spelled "forty-five dollars" (and no cents).
Its face value is 5 cents, but the melt value of a 1955-1981 Canadian nickel is $0.09 so the melt value is 4 cents more than the face value of the coin5 cents. It's not rare, and many are still in circulation.
Six cent stamps have been around since 1869 in the US. The First Class Postage rate was six cents from 1968 to 1971.