Gregory's Express, blue two-line handstamp (GRE-100) on fresh cover to San Francisco, with matching "Paid" in oval handstamp, Very Fine. Estimate  $250 - 350. $0 (Image)

Gregory's Express, Office, San Francisco, full clear blue three-line handstamp (GRE-110) on incoming 1852 folded letter from Nicaragua, matching "Not Paid" in oval handstamp with manuscript "50" clipper ship rate, dropped of by purser for local delivery in Gregory's office, Extremely Fine, a rare clipper ship rate usage, this is one of three examples of this handstamp recorded; with 2011 P.F. certificate. Estimate  $750 - 1,000. $0 (Image)

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)

Gregory's Express Pocket Letter Book, two unused books printed in 1851 by Nesbitt & Co., N.Y., both with "copyright secured" on cover, one with original unused envelope, Very Fine pair. Estimate  $200 - 300. $0 (Image)

Gregory's Express, Sacramento, red truncated box handstamp (GRE-131) with matching "NOT PAID" in oval handstamp on 1852 folded letter to the state Comptroller in Vallejo; light cover wrinkling, Very Fine and rare, only five examples of this Gregory's Sacramento handstamp are recorded. Estimate  $300 - 400. $0 (Image)

Gregory's Express, Sacramento, blue oval handstamp (GRE-127) and matching "Not Paid" in oval handstamp on cover to San Francisco, endorsed "Messr. T & H Please deliver immediately" at top; cover edge wear, F.-V.F., ex Dale-Lichtenstein. Estimate  $300 - 400. $0 (Image)

Gregory's Express, Trinidad, somewhat indistinct black oval handstamp (GRE127) on 1851 folded letter with Trinidad dateline to San Francisco, with manuscript "Not Paid", interesting content discussing politics; file fold, Fine, the only example of this Gregory's handstamp from Trinidad. Estimate  $200 - 300. $0 (Image)