Black Stradivarius Concertina, 5 Switch, Key of Eb, Quad, 104 Key, Minn M, Low Octive Base w/Double Musette (2 Med. & 2 Lows), Tuned to High & Low Button Box Stereo, New Condition, Tuned & Designed by Dan Gruetzmacher, w/Case, Call for details ...$4500.00