This vintage pitch pipe instrument by WM. KRATT CO. is a must-have for any musician or collector. The Chromatic Master Key design allows for easy tuning and pitch matching, making it an essential tool for any ensemble. This particular model, A-440 13 Keys, was manufactured in the United States in 1932 and comes with its original box. The instrument features a durable construction and is in excellent working order. Its unique design and history make it a valuable addition to any collection of musical accessories. Whether you're a seasoned musician or a collector, this vintage pitch pipe instrument is sure to impress.