Name-of-Boat Cachet "Atlantic". Large part folded letter from Baltimore to London May 30 1820, prepaid 18½ cents to New York, red oval "Ship Atlantic Sailed / June 4 / W. Matlock" Carried to Liverpool where the step-type Liverpool / Ship Letter was struck and the rate of 1/7d. charged, being 8d. ship letter plus 11d. inland postage to London, Very Fine and choice. Estimate  $1,000 - 1,500. $0 (Image)