Series E, Series EE, and Series I savings bonds issued in denominations of $25 or greater are eligible for conversion to book-entry bonds in TreasuryDirect ®.
31 C.F.R. §363.161
Series E, Series EE, and Series I savings bonds issued in denominations of $25 or greater are eligible for conversion to book-entry bonds in TreasuryDirect ®.
31 C.F.R. §363.161