http://www.uk-piano.org/piano-gen/piano ... iases.html
If you know how to remove the action (the working parts of the notes) safely it may have the action makers' name and number on the rear, and we may be able to date the piano.
explains that fake German names were often applied to genuinely German pianos exported to South Africa, New Zealand and Australia. There was also...
1928 Kirchner & Kopetinsky, Vienna