It means it was struck at the New Orleans Mint.
No. By which I mean it's not either, because the O in "coin" isn't really an O, it's part of the dipthong OI, which has its own pronunciation that's distinct from either long or short O.
If you mean no mintmark, it was struck in Philadelphia.
The "O" located above the word "dollar" is the mintmark and indicates where the coin was made. The letter "O" means the coin was made at the US mint in New Orleans, Louisiana.
Anonymous
Sou - (also spelled sol)
No. It identifies which mint made the coin. D is for Denver.
COIN
The o is the last letter in San Francisco. so for short SFO.
The letter is known as the mint-mark and tells where the coin was made. A coin having a P mint-mark (or no mint-mark on some coins) was made in Philadelphia, a coin having an S Mint-mark was minted in San Fransisco, a coin with a D mint-mark was minted in Denver.
offeroperate
a slanted letter
O is a letter of the European Alphabet, or it may signify a Zero in mathematics.