View of Thousand Island Park, NY Vintage (postmarked 1906) Undivided Back Postmark. It was published by E. F. Otis, Thousand Island Park, NY and printed in Germany. The condition is good with worn corners & edges, writing on front & back, stamp was torn off, some smudges, tanned spots and yellowing from age. The postmark on the back has a U.S. flag with 13 stars and postmarked 1906.