Mount Vernon, Flo./Febr. 4. Red oval postmark with md date at center (type VI) on 1834 folded letter to Talahassee, manuscript "10" rate; light cover toning, Fine, the latest of three recorded examples of this handstamp postmark, ex Rice; signed E.N. Sampson. Estimate  $300 - 400. The Mount Vernon post office was discontinued on February 19, 1834 when the name changed to Chattahoochee. $0 (Image)