Bulgaria's finance ministry said it sold ten-year Treasury notes worth 42.2 million levs ($28.7 million/21.6 million euro) at an average annual yield of 4.12%.
The previous auction for this issue was held at the end of 2008 when the average annual yield stood at 7.36%, the ministry said in a statement.
Dealers placed bids for 47.7 million levs worth of government securities against an offer of 50 million levs in the latest auction, the Bulgarian central bank which auctions government securities on behalf of the finance ministry, said in a separate statement on its website.
The average weighted price of the approved bids was 102.15 per 100.0 levs of par value. The maximum annual yield was 4.3% and the minimum yield of 3.89%.
The issue matures on January 16, 2018.