Dupuy & Schenck, 1846-48 (1¢) black. Ample to large margins, canceled by manuscript check mark on folded letter sheet to St. Louis, Mo., red "New - York, 10cts, Sep 7" integral rate cds, Very Fine and attractive, a scarce on cover usage. Scott No. 60L1  Estimate $500 - 750. $0 (Image)