Semi-postal stamps are stamps that are issued to pay postage, but cost more than the standard postage rate. The additional money is contributed to charity. Many countries have issued such stamps on a regular basis. The US has only issued a couple such stamps.
They have a postage value of 37 cents each. There is an on-line stamp collector that was selling retail at single stamps for one dollar a piece (mint condition), or a sheet of 20 for twenty dollars (also mint condition), of Heroes of 2011 (Semipostal) edition. A collector would probably pay about half of that, which means that they're worth about as much as they cost originally (maybe a little more) 45 cents.
Effectively, yes. Strictly speaking, a forever stamp is only one that bears the word "Forever", but like the forever stamp, the Breast Cancer Research stamp is good for 1 oz first class US postage at any time, regardless of the price when you bought it. "The postage value of the Forever Stamp, as well as the nondenominated Breast Cancer Research semipostal stamp, is always the domestic First-Class Mail single-piece 1-ounce letter price that is in effect on the day of use (mailing)."--USPS website, specifically http://pe.usps.gov/text/imm/immc1_020.htm .
No, it is not a Forever Stamp.
The stamp-postage value of a stamp is visible on the front of the stamp.
stamp
the stamp act is when they told you that a stamp a certain stamp had to be on absolutely everything.
on the envelope.
the stamp act is when they told you that a stamp a certain stamp had to be on absolutely everything.
the stamp act is when they told you that a stamp a certain stamp had to be on absolutely everything.
The value of a six pence stamp will depend on the year of the stamp, and the condition of the stamp.
the stamp act is when people where chared tax to buy a stamp
A stamp can travel the whole world while staying in one corner.