Hello Barbara,
This action is a " Brambach" as far as I know
it will be found only in pianos build by this brand .
A few 'Brambachs' were built under different
names.
Even though the configuration is different it uses
the same principle as the "standard" grand action.
A working action model of this type can be found
in the Foundation Museum.
Regards,
Museum Curator
Jack Wyatt
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