List of Keyboards 

https://www.youtube.com/watch?v=3RAkKb5HI_c&list=PLy8ZuBE1RYHFM-Nl-04vE-An8Rk7mfo5t

Exhibited in the Sydney International Exhibition, New South Wales Australia, 1879

Powerhouse Collection. Purchased with the assistance of the Australian Government through the National Cultural Heritage Account, E A and V I Crome Bequest, and Powerhouse Foundation, 2014. Photograph Marinco Kojdanovski.

The first Bechstein concert grand with serial number 100 was made in 1856. Carl Bechstein delivered a grand piano with serial number 576 to Frans Liszt on March 17th 1862.  
This rare concert grand from the Chris Maene Collection with serial number 373 is from 1860 and is one of the first concert grand pianos that Bechstein made.

Technical data:

• Inscription: C. BECHSTEIN. Hof-Lieferant Sr. Maj. des König's BERLIN

• Compass: 7 octaves (AAA-a'''')

• Keyboard: naturals in ivory, sharps in ebony

• Pedals: 2: controlling keyboard shift - dampers

• Dimensions: L 248 cm / W 138 cm

• Case: rosewood hand polished.

• Serial number: 373

• Chris Maene Collection number: CM 13 223

• Location: 3 - Museum headquarters "Piano's Maene" Ruiselede

Around the turn of the century, Bechstein made a limited number of conductor’s desk piano’s. They were built in such a way that the conductor could stand on a pedestal in front of the music desk and fold out the keyboard to play or accompany a passage during the rehearsal.
This piano has come from the Queen’s Chapel of the Savoy (a church in the city of Westminster, London).

Technical data:

• Inscription: C.Bechstein

• Compass: 4 octaves (E-c''')

• Keyboard: naturals in plastic, sharps in ebony

• Pedals: 2: una corda and forte

• Dimensions: W 90 cm / D 62 cm / H 150 cm

• Case: oak

• Serial number: 29791

• Chris Maene Collection number: CM 10 281

• Condition: restored in London

• Location: 2 - Museum "Chris Maene Collection" Ruiselede

https://www.youtube.com/watch?v=3RAkKb5HI_c&list=PLy8ZuBE1RYHFM-Nl-04vE-An8Rk7mfo5t

Beck is a German-born English maker of square pianos and is thus counted among the 12 apostles who settled in London from Germany. Square pianos of this kind, simple and easy to install, were particularly appreciated by the rising middle class.

Technical data:

• Inscription: Fredericus Beck Londini Fecit 1785

• Compass: 5 octaves (FF-f''')

• Keyboard: naturals in bone, sharps in stained pear

• Pedals: 3 stops: 2 to raise dampers, 1 buff

• Dimensions: W 148 cm / D 52 cm

• Case: mahogany and bosewood stringing

• Chris Maene Collection number: CM 36 136

• Condition: original

• Location: 4 - Museum storage space Ruiselede

'The Carl Holsøe piano; A George III mahogany and satinwood hammer piano. Marked Adam Beger, Londini, fecit anno 1788. England, late 18th century. H. 80 cm. W. 148 cm. D. 50 cm. Provenance: This hammer piano belonged to the Danish painter Carl Holsøe (1863-1935) and appears repeatedly in his paintings of interiors. For example, auction 822 lot 33 (Sept. 2011),"Interior with a woman seen from behind". The hammer piano was acquired by the current owner family at ABR in the 1950's.'' The writing on the plate is a very different style to the pianos made by Adam Beyer. 

Technical description: Case of poplar or lime, exterior decoration of speckle gold in varnish and painted floral designs may not be original; double manual, GG-e3, 2x8', 1x4', buff, upper manual slides in to couple; ebony naturals with pearwood arcades, accidentals of black-stained alizier covered with bone plates; jacks of alizier, tapered, originally with bristle springs, restorer ca. 1900 changed to brass leaf springs and added lead weights; leather-covered jack slides and guides; lower manual guided by metal pins in rack, upper manual by pins in mortises in rear of levers; stop levers on wrestplank behind nameboard; carved and gilded stand with seven cabriole legs; soundboard decorated with cast metal rose, paintings of flowers, insects, and a bird. Credit (Douglas Maple 1983)

This square piano was made by William and Adam Bent in Boston, Massachusetts around 1800. William’s brother Adam joined him on Orange Street about the same time and the firm seems to have existed until 1807, when Adam left to become a land speculator in Boston. William continued on Newbury Street 1809, when he went to Philadelphia. This piano has a compass of FF-f3, single (Zumpe) action, leather hammers, double-strings, 1 hand stop: dampers, wood frame, and a mahogany case

Credit: Smithsonian