In 1937, the International Standards Organization at the World’s Fair in Paris created a Comité that came up with acoustic vocabulary, measurements, and set a standard pitch of “A” at 440 cycles per second. This Comité was known as the CIA 👀
Why square grand pianos are not worth much if anything:
How valuable is a horse & buggy to those who race in NASCAR? Even a fully-restored quality-brand-name horse & buggy will not be wanted in NASCAR.
It’s not up to modern professional standards. It’s a novel antique.