Musical Instrument Accessories
Harmon Wow Wow Dämpfer für Bb-Trompete
Harmon Wow Wow Mute Trumpet Copper, Damper for Bb Trumpet, Model: "Wow Wow", Made from pure copper, With internal slide
https://www.bizrate.co.uk/musicalinstrumentaccessories/harmon-wow-wow-d%C3%A4mpfer-f%C3%BCr-oid729775508.html
