[ASTRONOMY]. Pair of ?Star and Planet Finder - Northern Hemisphere?" Constellation Finders with Rotating Discs. [N.p.: Barrit-Serviss, ca. 1900s]. Both finders with die-cut cardboard viewing ports with text explanations and with pictorial rotating discs of the night sky on wooden or cardboard bases. One with original tracking string, the other with fishing line (possibly later). One with original snaps at margins. Both approximately 15 x 15". One is framed and matted under glass; frame size approximately 22 ? x 22 ?". Some toning, marginal wear light soiling. Very good. Framed finder not examined out of frame. These lovely star and planet finders give accurate (for the 1900s) records of planets, stars, and constellations.