Greece sells T-bills, makes coupon payment FRANKFURT (MarketWatch) -- The Greek government on Tuesday sold 1.625 billion euros ($2.2 billion) of 13-week Treasury bills, with borrowing costs rising as the nation continues negotiations with international institutions over its next round of aid. The Public Debt Management Agency said it offered 1.25 billion euros of bills and sold 1.625 billion euros of paper. Bids exceeded the amount on offer 2.84 times, up from a bid-to-cover ratio of 2.95 at an Aug. 16 auction. The sale produced a uniform yield of 4.56%, up from 4.5% in August. Separately, Greece fully paid two bond coupons totaling 769 million euros that were due on Tuesday, Reuters reported, citing an unidentified government official.