June 20 (Reuters) - The German Finance Agency, the federal government's debt management office, sold 1.011 billion euros in a top up of its 2.50 percent, 30-year Bund at the lowest price of 132.59, the Bundesbank said on Wednesday. The notes (ISIN:DE0001135481) are due to mature on July 04, 2044. The settlement date is June 22. Results of May 09 sale included for reference: AUCTION DATE 20/06/18 09/05/18 AVG. YIELD 1.06 pct 1.26 pct AVG. ACCEPTED PRICE 132.64 99.69 LOWEST ACCEPTED PRICE 132.59 99.65 TAIL 0.05 0.04 TOTAL BIDS 1.233 bln euros 1.059 bln euros ALLOTTED 1.011 bln euros 1.008 bln euros RETAINED 0.489 bln euros 0.492 bln euros BID COVER RATIO 1.2 1.1 TOTAL VOLUME 25.0 bln euros 8.5 bln euros Auction details in German can be found at .