English: A vintage silver-plated Conn New Wonder Series 2 alto saxophone, made in Elkhart, Indiana, USA. The serial number 197155 dates the instrument to 1927. The 'H' below the serial number indicates that it is a "High Pitch" (A=456 Hertz) instrument. A more modern "Low Pitch" (A=440 Hertz) saxophone would have the letter 'L' or 'LP' below the serial numberr.