Columbia Harry B Jay Piston Valve French Horn, Mellophone with crooks. Not sure on the age, key or metal content. I have a friend Familiar with instruments, he gave it a try, he said the Piston Valves are moving freely. Metal content not sure, Magnet does not hold,Silver in Color, Does have some dings, pictured.Maker’s stamped on the front of the Horn. Columbia patented, Harry b J company Chicago. There is no case!  Any questions or the need for more photos please contact us. Payment due within 3 days close of Auction. Thank You, Happy Bidding!