1939 Toy Piano Patent USD123435 - with a book forming the top - Google Patents. Assigned to Louis Marx & Company, who manufactured similar metal toy pianos with book-lids in the 1940's.
Oct 2017 »1939 Toy Piano Patent USD123435 - with a book forming the top - Google Patents. Assigned to Louis Marx & Company, who manufactured similar metal toy pianos with book-lids in the 1940’s.