Several hundred persons are on hand at the Denver Coliseum at noon Sunday to buy tickets for the June 16 Rolling Stones concerts at the Coliseum. According to Barry Fey, promoter of the concerts, about 12,000 persons were at the Coliseum by 8:15 for the tickets that went on sale at 8. About 7,000 of them had spent the night waiting for tickets to go on sale, according to Denver police. The Rolling Stones will give two concerts, at 4 and 9 p.m. June 16. Fey reported that about 5,000 tickets for the concerts were still available Sunday night.; (Photo By John G. White/The Denver Post) ( DPL_1555897 )