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documentation of a souther German grand piano by an unknown maker of the circle of J. A. Stein, c. 1780

Mechanism: Prellmechanism with escapement
Range: 5 octaves (F1-f3)
General condition: fragmented original instrument

The replication/reconstruction of this instrument was prepared by a detailed documentation as these pictures show:

original instrument
original instrument
original instrument
original instrument
Johann Andreas Stein standing beside one of his grands M.Denzel 1789 (Bonn, Beethovenhaus)
Johann Andreas Stein standing beside one of his grands
M.Denzel 1789 (Bonn, Beethovenhaus)

documentation

upper view
upper view
bottom view
bottom view

X-rays

X-ray upside view
X-ray upside view
X-ray side view
X-ray side view

Videoscopes

Videoscopic inside view
Videoscopic inside view
Videoscopic inside with abandoned mice best
Videoscopic inside with abandoned mice best

CADrawings

CAD corpus
CAD corpus
CAD keyboard
CAD keyboard