Fr. 214. 1879 $10 Refunding Certificate. PCGS Banknote Very Fine 20. An interesting piece of Untied States banknote history. These refunding certificates were issued with an annual interest rate of 4% per year, and were meant to accrue interest indefinitely. This was an incentive for the public to hold on to these notes and not redeem them. Unfortunately in 1907, Congress stopped the annual indefinite interest on these notes. By 1907 these notes had earned $11.30 in interest, making them worth more that double face value.
