San Francisco Letter Express., Office - 162 Montgomery Steet. In blue double rectangle printed frank in upper left of stampless envelope with "Paid" in box handstamp used as a cancel, addressed locally, Extremely Fine, a great rarity with only 2 or 3 fully used with cancel, ex Jessup, Haas, Jarrett. Estimate  $2,000 - 3,000. $0 (Image)