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I have mine imported directly from Germany, and I have dated it according with keyboard system history - around 1860-1864. It has also the ELA ELA mark upon it. According with my reserach, my bandonion (Carlsfelder Konzertina) is a Zimmermann built model in his production workshop that was further developped at ELA ELA factory (Ernst Louis Arnold bought the Zimmerman workshop before this one left to US and continued to produce, that year, a small number of early versions (88 tones, 104 tones) developped by Zimmerman before new models with more keys were rapidly growing and marketed by Band years after 1864. Lumierre

just one help, pls, I am a novice, concertina notation for bellow pressing (closing) or drawing (opening) are like: ^ = press in, the other on, draw out, is that right?

THANKS A LOT, DANIEL!! I tried and tried and a smth simillar but not accurate with my vsersion keyboard also found at http://www.bandonion.eu/index.php?id=271 Best wishes, Lumierre

I received an old 1860-1864 made german bandoneon, known as Carsfelder Konzertina, 20+24 keys = 88tones, 3 rows each side. I tried to identify notes/keys - found and old and ilezible fingering sheet - does anyone know anything more about this type? Thank you, Lumierre