MADRID, 5 dicembre (Reuters) - Spain's Treasury announced the following results at Wednesday's bond auction where it sold 3 billion euros ($3.4 billion) of bonds. Following are the details of the sale in millions of euros: Oct. 31, 2021 bond LATEST PREVIOUS AUCTION DATE Dec. 5, 2018 Nov. 8, 2018 ISSUE MATURITY Oct. 31, 2021 Oct. 31, 2021 COUPON (PCT) 0.05 0.05 HIGHEST YIELD (PCT) 0.027 0.111 AVERAGE YIELD (PCT) 0.021 0.102 AVERAGE PRICE 100.079 99.846 TOTAL BIDS (MLN) 2,018 2,647 ALLOTTED (MLN) 553 1,222 BID/COVER RATIO 3.6 2.2 July 30, 2023 bond LATEST PREVIOUS AUCTION DATE Dec. 5, 2018 Nov. 8, 2018 ISSUE MATURITY July 30, 2023 July 30, 2023 COUPON (PCT) 0.35 0.35 HIGHEST YIELD (PCT) 0.421 0.574 AVERAGE YIELD (PCT) 0.412 0.565 AVERAGE PRICE 99.711 99.001 TOTAL BIDS (MLN) 2,099 2,771 ALLOTTED (MLN) 1,274 1,419 BID/COVER RATIO 1.6 2.0 July 30, 2028 bond LATEST PREVIOUS AUCTION DATE Dec. 5, 2018 Nov. 22, 2018 ISSUE MATURITY July 30, 2028 July 30, 2028 COUPON (PCT) 1.40 1.4 HIGHEST YIELD (PCT) 1.465 1.624 AVERAGE YIELD (PCT) 1.456 1.607 AVERAGE PRICE 99.497 98.147 TOTAL BIDS (MLN) 2,212 2,046 ALLOTTED (MLN) 1,146 1,305 BID/COVER RATIO 1.9 1.6 ($1 = 0.8819 euros) (Reporting by Katarzyna Zajaczkowska; Editing by Paul Day) (c) Copyright Thomson Reuters 2018. Click For Restrictions - here