Plastic action parts

[Phillip Ford]

Another interesting patent:

Patent 1,650,095 to J. Rydberg for Supreme Player Action Corp. on November 
22, 1927.

The 'construction of the members of the action from a cellulose ester 
plastic or similar cellulose plastic as such material is not affected by 
the atmospheric or temperature changes to which the members of the action 
are ordinarily subjected and is readily moldable and workable into any 
desired shape so that substantially the entire piano action can be produced 
from material of this character'.

An all plastic action in 1927?  Has anyone seen a piano this old with 
plastic action parts?

Phil Ford