There were no series letters on 1988 US $50 bills. You may be looking at the Federal Reserve District letter. Series letters, if present, are small and next to a bill's date.
There's more information at the Related Question.
It's still worth $50.
$50
About $50.
50 Canadian dollars.
It's worth 50 cents.
The price of a 1969 50 dollar bill as of 2013 is between $50 and $100. The actual value is based on the rarity of the bill and its overall, physical condition.
As of 11/2011, it might sell for $52 in nearly-uncirculated condition, $60 in crisp uncirculated condition. A dealer will pay face value only.
look at the number on the bill. if this question was referring to what are dollars worth compared to a different currency then the answer will constantly be changing as the value of different countries currency is fairly volatile. 1 dollar bill = $1 2 dollar bill = $2 5 dollar bill = $5 10 dollar bill = $10 20 dollar bill = $20 50 dollar bill = $50 100 dollar bill = $100
There were no 50.00 bills in 1957. Your answer is zero.
Yes a 50 dollar bill is red
Please don't assume that every old bill is a silver certificate. As the green seal and wording across the top of the bill indicate, a 1934 $50 bill is a Federal Reserve Note. There's more information at the question "What is the value of a 1934 US 50 dollar bill?".
A 2001 20 dollar bill that has been printed wrong would be worth 40-50$