Lot 531
Switzerland, 1855, Sitting Helvetia ("Strubel"), 10rp milky blue, red silk threads, margins large to just into frameline at lower left, tied by light diamond grid handstamp on small folded letter, matching "Zurich, Apr 18, 1857" cds, Very Fine. Zumstein No. 23Ca SFr 450 ($450).Scott No. 26 Estimate $200 - 300.