Light celadon evenly toned nephrite jade with usual concave and convex ends, delicately inscribed with scene of boat on a lake with mountains and foliage, plus 13-character poem and date, all within two bands of key-fret. The poem reads "The traveller's path is beyond the blue mountains; the boat sails on the green river." Sold as 19th century, but likely good 20th century work. The Chinese cyclical year dates to 1948, 1888, etc. Other views here and here.