I thought there might be some interest in this unusual 1871 Mathushek upright I have for sale. I believe it was the only one made. It has a slanted soundboard and tension strings on the back. It's actually quite modernistic in style. Price is $350. Photos available. Philip Jamison Pianos West Chester, PA http://www.classifieds2000.com/cgi-cls/ad.exe?P1+C194+R880401
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