letter
Note: The sign for letter as in a piece of mail is different from the sign for "letter of the alphabet."
LETTER:
A piece of mail. A letter:
Hold the right "A" hand up near your mouth as if your thumb were a stamp that you just recently licked. Then place the stamp on the "envelope" represented by your left hand.
Postage, or "a stamp."
Note: to sign "post office" simply fingerspell "P-O."
LETTER-of alphabet:
Touch the tip of the thumb of the right "L" hand to the tip of the left index finger. Use a small double motion. The left hand stays stationary, the right hand moves.