Gregory's Express, New York & California. Ornamented oval handstamp on 1850 folded letter to New York, letter datelined "Sacramento, June 16/ 50", red "Gregory's U.S. and California Express, Thompson & Hitchcock, Agts., 149 Pearl St. N.Y." three-line handstamp applied twice, Very Fine. Estimate  $400 - 600. $0 (Image)