The rate is the highest on a two-year note since April 1985, when the notes sold at an average yield of 9.81 percent.
The notes sold with an average yield of about 3.973 percent, the lowest since World War II.
The three-year notes sold at an average yield of 7.77 percent, the lowest since February 1988.
At the auction, the notes sold at a high yield of 6.370 percent, the highest since 6.815 percent in April.
Underwriters said the offering had been well received and the notes had sold quickly.
The individual notes have since been selling on eBay for about £200 each.
The notes sold at a higher price than expected to yield 5.83 percent.
On March 2, the notes sold.
The notes sold on the online auction site eBay for up to £30.
Each note sold for roughly the same price as one share of Cincinnati Bell.