Hong Kong 1873 Hong Kong Folded Sheet Docketed “Siemssen & Co” Sent to Mazatlan [Mexico] Noting Blue Oval “WELLS FARGO & Co MEXICAN ROUTE” & Boxed “COLLECT” Hand-stamps & Manuscript “2/-” (Two Bits = 2 Reales = 25¢); The Letter Was Carried Privately to San Francisco Most Likely on the PMSS Steamer “China” Which Arrived at San Francisco on 3 April 1873, Forwarded by Wells Fargo via a PMSS Steamer to Mazatlan, thus Applying the “MEXICAN ROUTE” Hand-stamp; Believed to Be the Only Item from the Far East Carried via Wells Fargo, not Alone that Mexico is a VERY SCARCE DESTINATION; 2024 Philatelic Foundation Certificate; EXTREMELY RARE & FINE (5-15901)