A stamp inside reads:
Fabrik v. Bandonions
Verlag v. Musikalien f. Bandonion
Cataloge und Preiscorante gratis
Unfortunately, there is no date inside and I believe it was made before
The height of the shown instrument is 21 cm,
depth 24 cm and (with closed bellow) 53 cm wide.
The bass consists of 25 keys, the treble has 29 keys (bisonor)
corresponding to the 130 voice layout.
Inside the bass cover and on one treble reed plate
there is an inscription saying 108 octav
which means that the 108 voice instrument has all its 108 voices with
double reed, octave tuning.
The instrument was bought by the actual owner in an antiques shop in North Miami in 1986 being originally from Wisconsin, a State with a certain bandoneon tradition inside the USA.
If somebody knows more details, please send a mail to the owner with carbon copy to me.