Looks like Hohner was able to make converter free bass decades ago.
The player mentioned in comments on some of his videos that it was made in the 1950s and that its a 5 row converter with 2 rows of stradella. Most likely a custom built instrument, although it makes we wonder why Hohner did not make more converters at the time. Or even if it was made for them, why didnt Hohner continue with it? Were the converter mechanisms that finicky at the time? Or maybe they stuck with M III since that is what their players were used to?
The player mentioned in comments on some of his videos that it was made in the 1950s and that its a 5 row converter with 2 rows of stradella. Most likely a custom built instrument, although it makes we wonder why Hohner did not make more converters at the time. Or even if it was made for them, why didnt Hohner continue with it? Were the converter mechanisms that finicky at the time? Or maybe they stuck with M III since that is what their players were used to?