The only $20 bills printed in the 1934 series were Federal Reserve Notes so I'm assuming that's what you have. In worn condition most of these retail for about $22 despite their age. In better shape the retail price depends on what series letter, if any, is next to the date. Series D bill retail for up to $30 in excellent condition, Series C up to $28, and the rest up to $24.
FWIW, the last $20 silver certificates were issued in 1891. The wording "will pay to bearer on demand" is found on older FRN's but was removed from later series.
Please post a new question with the bill's date and what letter if any is next to the date, because it's not possible to provide a value without that information. If you look at the top of your bill you'll see it's called a Silver Certificate, a form of paper money that was discontinued in the 1960s.
The US did not print any two dollar silver certificates after 1899.
At the least, $2
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.
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?"
That was written on the old US $1 silver certificate. At they time they were still in use, they could be redeemed for a dollar's worth of silver coins, but this practice was discontinued in the 1960s. The bill is still legal tender at face value today.
If the bearer can redeem the note into silver metal, I would guess it is worth the going price of silver on the day the bearer exchanges it or sells the metal.
It really depends on the series, but the small sized series look very similar to a normal US dollar bill only rather than having a green serial number it is blue. It also has a blue seal, says "Silver certificate" at the top, and rather than saying "X Dollar(s)" it says "X Silver Dollar(s) Payable to Bearer on demand" Earlier silver certificates will look different. For images just Google "Silver Certificate" and look at the different types.
The layout of the back is essentially identical to modern $1 bills. The front is similar but with some obvious differences, such as the words "Silver Certificate" and "In silver payable to the bearer on demand"; a blue seal and serial numbers; and the absence of a Federal Reserve seal. Beyond that, an actual picture is much more instructive. While it's not Answers.com policy to say "use the Internet", that's the best approach in this case. You can use any major search engine to look for "1957 1 dollar silver certificate images" or a similar phrase.
Please post a new question with the bill's date and what letter if any is next to the date, because it's not possible to provide a value without that information. If you look at the top of your bill you'll see it's called a Silver Certificate, a form of paper money that was discontinued in the 1960s.
The silver certificate and the gold certificate were replaced by the Federal Reserve Dollar.
There is no such thing as a 1989 $1 Silver Certificate.
A 1934 five dollar silver certificate in good condition is worth $33.00.
The Chief 1899 $5 dollar silver certificate is paper money.
The value of the 5 dollar 1936 silver certificate is not available because there was no certificate of this denomination issued in 1936. The certificate is most likely a fake.
It would be helpful to know the Country, Date and Condition of the note in question. If you are talking about a US $10 silver certificate, you might also look for a little "Series" letter next to the date. With that someone might have an idea what sort of 10 dollar bill you are talking about. Otherwise it is hard to make any sense of your question.
The oldest dollar bill is a 1935 Silver Certificate.