Greece on Wednesday successfully auctioned a six-month Treasury bill issue raising 1.3 billion euros from the market at a stable cost. The interest rate of the issue was set at 1.91 pct, unchanged from the previous auction of same issue last month. Bids submitted totaled 1.362 billion euros, 1.36 times more than the asked sum. The auction was made with the market's primary dealers and the settlement date is Friday, 15 September. The Public Debt Management Company said it will accept additional non-competitive bids up to 30 pct of the asked sum by Thursday, 14 September.