Auction Series 257-264 in Zurich Day 4

Coastal Ships - Helsingfors Area - J.J. af Lindfors 1893.: S.S. Östra, 5 penni black yellow paper (lithographed and punched out individually), Type II with large five pointed star, an unused example with margins all round, a few surface defects, unused with tiny trace of gum. An extremely rare stamp, there are believed to be but two examples known.
Catalogue 261: Stamp Issuing Steamship Companies