Johann Matthäus Keuffel, Grotrian, Helfferich, Schulz, Th. Steinweg Nachf. GmbH & Co, fortepianos (salon concert grand), mahogany, spruce, maple, wood, Total: Length: 2110 mm; Width: 1520 mm; Height: 995 mm (instrument); Height: 360 mm (sides), Inscription: on the inside of the keyboard cover: Grotrian, Hellferich, Schulz, Th. Steinweg Nachf, Braunschweig, below: design and exterior decoration by Johann Matthäus Keuffel, inscription: on the full armored frame on the left below the tenor pegs the serial number: 10625, keyboard instruments, ornaments, floral ornaments, cupids, putti, cupids with attributes of the arts, sciences etc, lyre, lyre, zither, psaltery, idylls, rural scenes, arcadian scenes, historicism.
Johann Matthäus Keuffel, Grotrian, Helfferich, Schulz, Th. Steinweg Nachf. GmbH & Co, fortepianos (salon concert grand), mahogany, spruce, maple, wood, Total: Length: 2110 mm; Width: 1520 mm; Height: 995 mm (instrument); Height: 360 mm (sides), Inscription: on the inside of the keyboard cover: Grotrian, Hellferich, Schulz, Th. Steinweg Nachf, Braunschweig, below: design and exterior decoration by Johann Matthäus Keuffel, inscription: on the full armored frame on the left below the tenor pegs the serial number: 10625, keyboard instruments, ornaments, floral ornaments, cupids, putti, cupids with attributes of the arts, sciences etc, lyre, lyre, zither, psaltery, idylls, rural scenes, arcadian scenes, historicism