copy after Anton Walter, Vienna around 1795
keyboard compass: F₁ - g³ (5 octaves and one note)
triple strung in the treble, otherwise two strings per note
Viennese action ("Prellzungenmechanik")
naturals ebony, sharps covered by bone
2 kneelevers (forte, moderator )

copy after J.J. Könnicke, Wien around 1790
keyboard compass: 5 octaves (F₁ - f³)
Viennese action ("Prellzungenmechanik") 2 kneelevers (forte, moderator)

copy after Gottfried Silbermann, Freiberg 1747
keyboard compass: 5 octaves (F₁ - f³)
frontstops: forte, una corda