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Chemnitzer Concertina

Chemnitzer System: Uhlig, 40 tones
(bisonoric, logical)

(Not part of Collection Oriwohl)

Manufacture: unknown, with entry from 1853

This is a first extension of the original Konzertina (see previous). With two rows manuals, the number of keys increases to 22 for 44 tones.

As a result, this instrument has two keys at a distance of one fifth. This expansion to 2 rows of keys took place around 1836.

However, 12 keys on the right manual are unusual and indicate a custom-made product. Such instruments are commonly known with 10 keys on each side and a total of 40 tones.