As many as you want to put on the envelope, as long as the total value equals the cost for the letter. Typically a single stamp is used.
The cost is currently 98 cents for the first ounce.
how many forever stamps = .94
5
what the price to mail letter to
maybe 2 0r 3 stamps
typicaly 2 stamps
How many stamps to STOCKHOLM
how many first class stamps does it take to mail a 4 oz letter and package
if it weighs an ounce or less, three stamps.
1
One.
one
1