Regardless of denomination, all current US paper bills are the same size (156 mm x 66.3 mm)
A date is needed. Please see the question "What is the value of a (date) US 20 dollar bill?" for more information.
Please don't assume that every old bill must be a silver certificate. The last US $20 silver certificates were printed in 1891. As the green seal and banner across the top of the bill indicate, a 1934 $20 bill is a Federal Reserve Note. There's more information at the question "What is the value of a 1934 US 20 dollar bill?" .
No US $20 bill carries a "G" series letter. You may be looking at the Federal Reserve District letter. The series letter, if any, on US bills is next to the date. Regardless, a date is needed in order to estimate a value. Please determine the bill's date and see the question "What is the value of a [date] US 20 dollar bill?" for more information.
A 1990-series $20 bill is too new to have any added value. Some of them are still in circulation.
Unless it is uncirculated, any $20 bill printed since the 1970s is worth only face value.
Andrew Jackson is on the 20 dollar bill
The White House is on the twenty dollar bill. ($20)
The 1914 $20 dollar bill with Grover Cleveland on the front.
200
in the U.S. how much is a twenty dollar hong kong bill worth?
About the size of a US dollar bill about an inch thick
$20
The size of the 1820 United States dollar bill was approximately seven inches by 3 inches. The dollar bill is smaller in 2014.
Please look at your bill more closely; the date should be 1934. There's more information at the question "What is the value of a 1934 US 20 dollar bill with HAWAII on it?"
It's still worth exactly $20.
Please check your bill again and post a new, separate question. There are no 1972 US $20 bills.
There are many varieties of US $20 bills that have brown seals, but only two types were printed in the 20th century - the 1929 series of National Currency Notes and the 1934 series of wartime currency printed for use in Hawaii.Please see the questionsWhat is the value of a 1934 US 20 dollar bill with HAWAII on it?What is the value of a 1929 US 20 dollar bill?