If you received some US savings bonds decades ago,
perhaps as a graduation gift, they may no longer be
earning you any more interest. So why hold on to
them? You can cash them in (although you may need to
pay taxes on the interest), or exchange them for a
new series that continues to pay interest. Here are
some of the bonds no longer earning interest: Series
E issued between December 1965 and March 1974,
Series H issued between June 1952 and March 1974,
and Series HH issued between January 1980 and March
1984.

Check out this link to find out what's no longer
paying interest:
http://www.publicdebt.treas.gov/sav/savstop.htm

If you know your bonds do still pay interest, but
aren't sure what the rate is, you can find it here:
http://wwws.publicdebt.treas.gov/BC/SBCPrice

If you received some US savings bonds decades ago,
perhaps as a graduation gift, they may no longer be
earning you any more interest. So why hold on to
them? You can cash them in (although you may need to
pay taxes on the interest), or exchange them for a
new series that continues to pay interest. Here are
some of the bonds no longer earning interest: Series
E issued between December 1965 and March 1974,
Series H issued between June 1952 and March 1974,
and Series HH issued between January 1980 and March
1984.

Check out this link to find out what's no longer
paying interest:
http://www.publicdebt.treas.gov/sav/savstop.htm

If you know your bonds do still pay interest, but
aren't sure what the rate is, you can find it here:
http://wwws.publicdebt.treas.gov/BC/SBCPrice