The capital letter on each US coin tells you at which mint it was made; P is for the Philadelphia mint, S is for the San Francisco mint, and D is for the Denver mint. See the related question below.
'w'stands Washington the capital of The United States Of America on the US coins. The W stamped on US coins stand for the mint at West Point where it was made. Today, the West Point mint makes all of the commemorative and precious metal US coins.
No they don't all have mintmarks.
Washington, DC
The Philadelphia mint (where the coin was made).
A mint mark on any coin (not just the United States) indicates where a coin was minted. For modern US coins, P stands for Philadelphia, D is Denver, and S is San Francisco.
Honolulu is the capital city of the US state of Hawaii.
The letter "D" is the mint mark for the US Mint in Denver, Colorado.
US capital cities starting with the letter "H"Harrisburg, PennsylvaniaHartford, ConnecticutHelena, MontanaHonolulu, HawaiiHouston, Texas
No US state has a state capital that begins with the letter G. However, Geneseo is the capital of Livingston County in New York State.
The capitals of US states that start with the letter M are:Madison, WIMontgomery, ALMontpelier, VT
Only one U.S. state's capital city starts with the letter N. Nashville is the capital city in Tennessee.
No US state capital begins with the letter E.