It depends on their date, series letter, and condition. Please post a new, separate question with the bills' dates and what letter if any is next to the date. You don't need to post the serial numbers, though.
There were no $1 silver certificates with series 1937 for the year.
There were no $1 silver certificates with series 1937 for the year.
The U.S. did not issue silver certificates in 1809.
Higher-value silver certificates weren't printed very often. The only series dates for $100 silver certificates were 1878, 1880, and 1891.
Check that note again. The first U.S. silver certificates were issued in 1878.
The US only issued $1 silver certificates dated 1957. No other denominations have that date. The last $20 silver certificates were issued in the 1891 series.
How rare? Which denomination?
Please check again and post a new question. The U.S. didn't print any silver certificates with that series year.
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.
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.
No silver certificates were dated 1800. The first ones were issued in 1886. Please check again and post a new question.
Please check your bill again. "H" is the highest series letter for 1935 $1 silver certificates. The series letter on a US bill is not part of the serial number. It's always next to or below the date. Series 1935 $1 silver certificates may not have a letter, or there could be anything from A to H.