Altviool JOHANNES THEODORUS CUYPERS 1782 Den Haag / Nederland  64,8 × 22.7 × 11.1mm

Viola Gasparo Bertolotti da Salo 1562-1609 ca. Brescia / Italy Total viola length: 716 mm Back length: 446 mm (17-5/8") Upper bout width: 213 mm Center bout width: 134 mm Lower bout width: 254 mm Upper rib height: 28-32 mm Center rib height: 29-32 mm Lower rib height: 29-32 mm Stop length: 230 mm Vibrating string length: 385 mm Neck length (bottom of nut to ribs): 150 mm

Altviool Van den Broek Rob (Bouwer) 2003 Utrecht / Netherland 71.3 × 25.2 × 15.3cm