Compound Interest Treasury Notes were United Statestreasury notes authorized in 1863 and 1864 in denominations of $10 and $50. They matured for three years until they can be redeemed and brought 6 percent interest. Treasury securities are government bonds issued by the United States Department of the Treasury through the Bureau of the Public Debt. ... 1863 (MDCCCLXIII) is a common year starting on Thursday of the Gregorian calendar (or a common year starting on Saturday of the Julian calendar). ... 1864 (MDCCCLXIV) was a leap year starting on Friday (see link for calendar) of the Gregorian calendar or a leap year starting on Sunday of the 12-day-slower Julian calendar. ... Interest is the rent paid to borrow money. ...