1857, 1¢ blue, type V + 3¢ dull red (single & pair). Tied by two attractive strikes of blue "Chicago, Ills." double circle on small 1860 cover to Canada with arched "U. States" and "Paid 10" exchange markings all in red, Extremely Fine, a pretty little cover. Scott No. 24+26  Estimate $300 - 400. $0 (Image)