Davenport, Cal./F. D. Cook, P.M., Feb 26, 1884. Fancy blue-black oval postmark (Williams SCR-710) on cover to Switzerland franked pair of 3¢ Banknotes cancelled with beautiful star in star killer, small cover tear at bottom, Very Fine and choice, this cover is the single listing in Williams. Estimate  $350 - 500. $0 (Image)