The problem
There is a HUGE market for vintage fans. unlike vacuum cleaners and washers.
An old 1890-1910 general electric pancake fan (large diameter motor, skinny for the era profile) Can go for THOUSANDS and thousands of dollars.
I have seen vintage fans go for well over $10,000 on ebay.
Most brass winged fans dont go for much less than $100 ever. I got a steal on mine because it has a broken pivot joint. (the neck isn't ajustable anymore, nor will it oscilate)
Keep your eyes peeled on craigslist and in old stores. You might fine one real gem worth MANY thousands of dollars.
Keep your eyes out for old primitive, no cage brass wings, Tesla, or General electric pancake fans!