Hopkinson's Express., Paid. Black printed frank with the 2nd line below "Express" a dotted line, on 1864 3¢ pink entire with blue Dutch Flat Wells Fargo date stamp (Leutzinger type 11-9) to San Francisco, Extremely Fine, one of the scarcer type Hopkinson frank with only 3 known, ex Jarrett. Estimate  $600 - 800. $0 (Image)