Patten & Bunker's Humboldt Express., printed express company corner card, used with clear blue Carson City U.T. datestamp and ms. 'Pd. 3c', to Marysville Cal., reaired nick at T., mostly T. backflap cannibalized, light edge soiling, still presentable and fine, rare, possibly the only recorded example, this company operated between the Humboldt district of Nevada and Carson City in 1861, but it is not clear that this is a 'frank', it appears to be a corner card contrary to Nathan's description