Lot
1915 
1923, 20¢ carmine rose & 30¢ olive brown, single of each on separate Frost First Day Issue registered & special delivery covers; 20¢ in combination with 2¢ Washington plate number single (554, pre-use corner nick) tied by "Washington D.C., May 1, 1923" slogan machine cancel, 30¢ tied by "Washington, D.C., Mar 20, 1923" duplex postmark, both with registry and special delivery markings, distinctive Frost wax seal stains at center, Very Fine. Scott No. 567, 569 $1,400.