Postal Stationery, 1861, 12¢ red & brown on buff. Entire to Munich, Germany, uprated with 1879 1¢ ultramarine, horiz strip of three, all tied by "San Francisco, Cal., Oct 3, 81" duplex postmarks, 1¢ strip applied over Bamber & Co. black printed frank (strip lifted and hinged in place), Very Fine, a very rare usage, one of only four known used with the Bamber & Co. express frank. Scott No. U42  Estimate $750 - 1,000. $0 (Image)