(California Penny Post Co.) Penny Post Co., San Francisco, remarkable bold strike of circular company handstamp on cover to Fitchburg Mass. bearing 1855 10¢ green (14), four margins and rich color, cancelled by manuscript cross-hatch, tied by "San Franciso Cal. 20 Sep" cds, reverse with "Direct answers to Morgans Ranch, San Francisco" endorsement; 10¢ light creases, Very Fine and rare, ex-Emerson, Jessup and Haas; with 2012 P.F. certificate. Estimate  $3,000 - 4,000. ONE OF ONLY TWO RECORDED 10¢ 1855 ISSUE USAGES WITH THE PENNY POST CO. CIRCULAR HANDSTAMP. $0 (Image)