3c Brownish Carmine, Ty. II, Chicago Perf 12-1/2 (11A var). Rich color, centered to left with trace of adjoining stamp at right, perfs mostly intact, slightly blunted at top, tied by well struck "Chicago Ill. Oct. 2, 1856" circular datestamp on cover to Iowa City with "Ellithorpe, Kline & Bradley, CARRIAGE Manufacturers" corner card, docketing at top, non-contemporary pencil notation at bottom

VERY FINE. A STRIKING EXAMPLE OF THE 3-CENT CHICAGO PERF USED ON A MANUFACTURING CORNER CARD.

Wilson Hulme speculates in in his article in Chronicle 175 that R. K. Swift distributed Chicago perf stamps to various businesses as a trial or to strengthen the possibility of selling the perforating machine to the post office. Many of the businesses were in a straight path between Swift's bank and Elijah Hadley's (inventor of the machine) office (p. 167).

With 1980 P.F. certificate

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