MADRID, 5 luglio (Reuters) - Spain's Treasury announced the following results at Thursday's bond auction where it sold 3.0 billion euros ($3.75 billion) of bonds. It sold 1.2 billion euros worth of bonds maturing in July 30, 2015 with a 4.0 percent coupon and 1.0 billion euros worth of bonds maturing in Oct. 31, 2016, with a 4.25 percent coupon. The Treasury also sold 747 million euros of a bond maturing Jan. 31, 2022, with a 5.85 percent coupon. The Treasury had expected to sell between 2 billion and 3 billion euros of the debt. Following are the details of the sale in millions of euros: July 2015 bond LATEST PREVIOUS AUCTION DATE July 5, 2012 June 21, 2012 ISSUE MATURITY July 30, 2015 July 30, 2015 COUPON (PCT) 4.0 4.0 HIGHEST YIELD (PCT) 5.197 5.510 AVERAGE YIELD (PCT) 5.086 5.457 AVERAGE PRICE 96.998 95.951 TOTAL BIDS (MLN) 2,829 2,915 ALLOTTED (MLN) 1,239 918 BID/COVER RATIO 2.3 3.2 Oct 2016 bond LATEST PREVIOUS AUCTION DATE July 5, 2012 June 7, 2012 ISSUE MATURITY Oct 31, 2016 Oct 31, 2016 COUPON (PCT) 4.25 4.25 HIGHEST YIELD (PCT) 5.621 5.443 AVERAGE YIELD (PCT) 5.536 5.353 AVERAGE PRICE 95.158 95.764 TOTAL BIDS (MLN) 2,594 2,114 ALLOTTED (MLN) 1,015 825 BID/COVER RATIO 2.6 2.6 Jan 2022 bond LATEST PREVIOUS AUCTION DATE July 5, 2012 June 7, 2012 ISSUE MATURITY Jan 31, 2022 Jan 31, 2022 COUPON (PCT) 5.85 5.85 HIGHEST YIELD (PCT) 6.505 6.121 AVERAGE YIELD (PCT) 6.430 6.044 AVERAGE PRICE 95.904 98.564 TOTAL BIDS (MLN) 2,377 2,011 ALLOTTED (MLN) 747 611 BID/COVER RATIO 3.2 3.3 ($1 = 0.7994 euros)