"G" is the Federal Reserve District letter rather than the series letter; if there is one it's next to the date.
The fact that your bill is a Federal Reserve Note means it was printed in 1976 or later and is not rare. If you got it in change it's only worth face value.
Its worth no more than its face value. 2$
There were no series letters on any 1929-dated US bills. A large "G" indicates that the bill was distributed through the Chicago Federal Reserve District. There's more information at the question "What is the value of a 1929 US 5 dollar Federal Reserve Note?"
Any $2 bill of series 1976 or later is worth $2. Also, the Chicago designation simply indicates the Federal Reserve Bank that distributed the bill. It was actually printed by the Bureau of Engraving and Printing in Washington.
The value depends on the series (date) and condition. If it's series 1976 or later, it's worth face value.
Check the date or rather series again. US dollar bills were not made in 2010.
G00228584a
Current retail prices for a bill that shows very little wear are in the $20 range.
To clear things up, the bill wasn't made in Chicago. It was printed in Washington for distribution through the Chicago Federal Reserve District. Please see the question "What is the value of a 1934 A 10 dollar Federal Reserve Note?" for values and other information.
$100.00
The 1934 100-dollar bills ended with Series D. A note in good condition, with little wear can be worth about $140.
$130.-$175. depending on how worn it is.
As of 09/2008 auction prices are around $24.
50.00
About $1.25
$10.
It's still worth one dollar.
It's still worth one dollar.