Anthony & Co's Northern Express, Paid. Sharp full strike of oval handstamp on buff envelope to San Francisco, Cal., handed over to the post office with "San Francisco, Cal., May 10" cds; couple tiny stains, Extremely Fine, a very rare usage from this one-man express which was in operation for little over a year, this probably being the finest known, illustrated in Nathan. Estimate  $1,000 - 1,500. $0 (Image)