Gregory's Express Office, San Francisco, clear strike of blue three-line handstamp (GRE-111) on c. 1852-53 folded letter to Baltimore, Md., with matching "Paid" on oval handstamp; edge tone spot at top center, Very Fine, a rare example of this Gregory's three-line handstamp type, with only seven examples recorded in the Thomas census with this example not recorded. Estimate  $300 - 400. The ship that conveyed this letter to the eastern seaboard may have gone directly to Baltimore since there is no indication of mailing or private carriage from New York. $0 (Image)