LONDON.- Sothebys four-day auction of The Philatelic Collection of Lord Steinberg concluded today, bringing a total of £2,648,652 ($4,219,236). Todays one-day auction comprised Great Britain Mint Multiples and realised £1,134,924 ($1,782,744). Commenting on the collection and the results achieved, Richard Ashton, Sothebys Worldwide Philatelic Consultant, said: The sale of Lord Steinbergs collection of Great Britain mint multiples followed the trend of the sale held earlier this month. Buyers are becoming increasingly condition-conscious and are targeting rare stamps in the finest condition. These are fetching ever higher prices as evidenced by lot 377, a set of the 1913 Seahorse Issues, which sold for £33,600, more than three times above the low estimate. The extremely fresh condition of the top lot (11), an 1840 1d. black Plate 7, made it a highly desirable addition to any