United States. (Switzerland). 1891. Envelope addressed to the United States bearing Switzerland Yvert 72, 25c green tied by Klein-Dietril double ring, underpaid 'T' hand-stamp and New York/ Due 10 Cents' duplex bearing on reverse United States postage due Yvert 8, 1c brown/ carmine (block of ten) tied by Great Bend/ Kansas date stamp receiver and cork obliterator. Very nice item of postage due mail.