Gregory's Express Office., San Francisco, clear strike of blue three-line handstamp (GRE-110) on folded letter sheet to secretary of state VanVoorhies in Vallejo, matching "Not Paid" in oval handstamp, 1852 docketing on reverse; cover missing bottom flap, Very Fine. Estimate  $200 - 300. $0 (Image)

Gregory's Express Office., San Francisco, blue three-line handstamp (GRE-110) on ca. 1852 folded letter sheet to Hamilton, with matching "Free, J.W.G." oval handstamp (GRE-204c) with initials for Joseph W. Gregory; cover missing most of bottom flap, F.-V.F., one of two known examples of this free carry handstamp. Estimate  $200 - 300. $0 (Image)