Conrad Graf – Vienna 1820ca.
Length: 240cm
Compass: FF – f
Pedals: Una corda, bassoon, damper lifting, moderator, banda turca.
A.Walter – Vienna 1800ca
Length: 216cm
Compass: Fa0-Sol5
Pedals: Moderator, damper lifting
G. Silbermann – 1749
Length: 235cm
Compass: Fa0-Sol5
J. Brodmann – Vienna 1805ca
Length: 222cm
Compass: Fa0-Fa6
Pedals: Moderator, damper lifting