31 C.F.R. § 359.56 How can I find out what my book-entry Series I savings bonds are worth?
Title 31 - Money and Finance: Treasury
(a) Redemption values. You may access redemption values for your book-entry bonds through your New Treasury Direct account. (b) Redemption penalty. Redemption values shown in your New Treasury Direct account reflect the three-month interest penalty applied to bonds redeemed prior to five years from the date of issue.
Title 31: Money and Finance: Treasury
PART 359—OFFERING OF UNITED STATES SAVINGS BONDS, SERIES I
Subpart C—Book-Entry Series I Savings Bonds
§ 359.56 How can I find out what my book-entry Series I savings bonds are worth?