Switzerland, Zürich, 1843, 6rp black, Vertical Underprint. Margins large to just shaving frameline at left, strong colors and impression, tied by neat red rosette handstamp on folded letter to Weisslingen with matching "Zurich, 13/5, 45" cds, Very Fine; with 2010 von der Weid certificate. Scott No. 1L2. Zumstein No. 2S; SFr 4,800 ($5,438)  Estimate $1,000 - 1,500. $0 (Image)