There were no series letters on 1899 $2 silver certificates. Please see the question "What is the value of an 1899 US 2 dollar silver certificate" for values and other information.
At the least, $2
The US did not print any two dollar silver certificates after 1899.
There is no "series D silver dollar" (a coin) so I assume you're referring to a silver certificate (a bill). However there were different series that went up to "D"; you'll need to check the bill's date and post a new, separate question with that information.
More information is needed because blue-seal silver certificates were issued for many decades and in different denominations. Please check your bill's date and denomination, then look for questions in the form ""What is the value of a [date] US [denomination] dollar silver certificate?"; e.g. "What is the value of a 1953 US 10 dollar silver certificate?"
About $1.25
$3.00
About $2.00
Check
There were no $1 silver certificates with series 1937 for the year.
The U.S. did not issue silver certificates in 1809.
Please check your bill again. There were no series letters on 1934 silver certificates, and no silver certificate series letters ever went as high as K. Please see the question "What is the value of a 1934 US 1 dollar silver certificate?" for more information.
About $3.
There were no series letters on 1899 $2 silver certificates. Please see the question "What is the value of an 1899 US 2 dollar silver certificate" for values and other information.
There is no "series D silver dollar" (a coin) so I assume you're referring to a silver certificate. See the Related Question for more information.
Normally it would be necessary to have its denomination but the only bill fitting that description is a $1 silver certificate. Please see the question "What is the value of a 1935 D US 1 dollar silver certificate?" for detailed information.
Please post a new question and include the series date and condition of the bill.