What date? What mint mark? Was it issued by one of the separate states or at the Federal level?
Please post a new question with those details.
Unfortunately, your German mark is only worth $1-$2 depending on its condition. This mark is very common and does not have a high value.
About $27.
42cents
About $150.
"DO" isn't a mint mark. The mint mark on a silver dollar for that year is on the reverse (tails) side, just above the letters "do" in the word "dollar."
One Dollar
The 1804 Silver dollar, Class I and the 2007 C$1m coin are worth more than the German Mark
about $25 depending on condition and mint mark
They are still found in circulation, have no silver and are only face value
If the coin has any wear the value is for the silver, about $8.50
Post new question with The Mintmark please.
$15 to $20 depending on condition and variety.