Nariel is yet another home of single row melodeons (with the voice stops) and single row accordions (without the stops) in C; they're played in C.

And many Oz concertina players wince when their instrument is described as a squeezebox; they regard that as the proper term for accordions and melodeons (known to some as potato mashers) and are happy for their instrument to be described as a concer, constant screamer or even a leather ferret.

But Dick is probably on the money with the instrument in the original post being from Saxony.

Cheers, Rowan