A half cent is one half of one cent or 200 half cents = $1.00. If your asking about the value of a specific coin, a date is needed.
This is part of the Washington bicentennial issue of 1932. A dealer would charge 10 to 25 cents for it , mint or used.
The value of the 1910 1955 penny stamp value is one pound.
6 cents
Scott #s 553 576 582 598 605 There are several different versions of this stamp. The value varies greatly between them, as low as 35 cents to as high as $5.25 in catalog value. Consult a postage stamp catalog, usually available at your local library for exact identification and catalog values.
1948-1963
The "H" rate makeup stamp is worth one cent US. It was used with the pre-rate change 32 cent stamp to make the new 33 cent cost of a first class letter.
{| |- | Scott Number 1034 You can purchase one of 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. |}
Scott number 3749 and 3749A are the 1 cent Tiffany Lamp Stamps. They are labeled with the letter F. All the variations, both mint and used, can be purchased for ten cents.
Currency wise, it is worth face value. If you can identify the stamp using a catalog, you may find that it has value to collectors. Most libraries have a catalog you can reference and find out the collector value.
Currently it is 1 cent. Half cent stamps were available at one time and stamps with fractional values at the end are still available for bulk mail.
It has a face value of one cent. It is not very rare and you can by a copy for the minimum stamp fee of about 20 cents.