Lot
2117 
1852, 3¢ pale brownish carmine, type I, unofficial "Chicago" perf 12½ position 19L7, vibrant color, scissor separated showing full perfs on three sides and portion of adjacent stamp at left, tied by light "Chicago, Ill., May 22" cds on 1856 cover addressed in the hand of R.K. Swift to Washington D.C., reverse with blue Tremont House hotel cameo corner card on backflap, Very Fine, ex-Grunin & Piller; with 1975 P.F. certificate and 1993 Dr. Amonette attest. Scott No. 11 var. Estimate $3,000 - 4,000.
AN EXCEPTIONAL HOTEL CORNER CARD COVER USAGE OF THE 3¢ CHICAGO PERF SENT BY THE PROMOTER OF THE HADLEY PERFORATING MACHINE, R.K. SWIFT, WHICH WAS USED TO PRODUCED THE CHICAGO PERFS.