Awarded in 1899 to Friedrich August Böhm, this is not for a chromatic harmonica. The mouthpiece and slider on the front of this harmonica are simply there to provide trilling effects, by rapidly opening and closing off a reed chamber as the player blows or draws. However, the basic mechanism is very similar to that used on the typical modern chromatic harmonica.
F.A. Böhm founded his harmonica company in the mid 1800s in the town of Untersachsenberg, near the thriving harmonica town of Klingenthal. After WWII they ceased production of harmonicas and concentrated on making electronic musical instruments and amplifiers, until being nationalised in the early 1970s.
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