Auction Series 257-264 in Zurich Day 4

Coastal Ships - Helsingfors Area - Nyländska Skärgårds Aktiebolag 1906: Lithographed 10 penni black on stone, Type I, imperforate, a used example uncancelled and applied slightly off the edge of 1907 postcard mailed to Ms. Malmstein in Helsingfors endorsed "Östra Skärgården" at base, with Finland 10 p. red tied by 'Kyrksläatt' despatch cds at right and Helsingfors trilingual cds alongside (18 November). A scarce usage.
Catalogue 261: Stamp Issuing Steamship Companies