Nothing, unless a collector wants it.
One hundred million dollars ($100,000,000) is the value of one billion dimes.
about $25
1,000,000,000
One Billion
There's no "MD" mint mark on any US coin. The mint mark on a Peace dollar is near the word ONE on the back: No mint mark = Philadelphia D = Denver S = San Francisco Please see the Related Question for more.
1922 is the most common date for Peace dollars. At present, one is worth around $23.
About $100 for a nice one.
You have one?! Approximately 6,000 usd
One billion divided by 15 tens is approximately 6666667 [The actual value is 6666666 2/3]
There are eight zeroes in 3.9 billion. This number is written as 3,900,000,000 in numerical value. One billion has nine zeroes.
In the US system, the next place to the left has a value of one billion to under ten billion, or units of billions. Then there is tens of billions, and hundreds of billions.
If it has one it's just above the eagles tail on the reverse.