Savings Bonds Worth

Question: any way to know how much my us Savings Bonds are worth?
i have two us Savings Bonds both $250 and they are almost 20yrs
i currently am in the middle of looking for them since i moved or else i could use the number to find out. is there any way to know est.
i know theres a way to find out online but you need the numbers and without the bonds i havn’t got the numbers
Answer: http://www.treasurydirect.gov/BC/SBCPrice
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