Josef Wiesner Schrammelbandonion general view with main valve plaque
Josef Wiesner Schrammelbandonion treble keyboard layout
Josef Wiesner Schrammelbandonion bass keyboard layout
Josef Wiesner Schrammelbandonion treble key mecanics
Josef Wiesner Schrammelbandonion treble chamber construction
Josef Wiesner Schrammelbandonion view of both keyboards demonstrates their symmetric setup
Georg Strobel, München, Schrammelbandoneon 38 treble keys wit square shaped buttins, buttonacted main valve button
Josef Wiesner Schrammelbandonion self made cabinet for Wiesner soundboards by Mr. Scheungrab
Josef Wiesner Schrammelbandonion Mr Alois Scheungrab's rebuilt Wiesner
