I have the antenna, heavy duty rotor & control, coax, switchbox, etc.; made
in 60's - 70's. Been in bsmt for 25+/- years. Any interest? What's it
worth?

There is a Ham M rotor (I assume that's what you have, anything less and
it's probably ragged out) on ebay right now, it has 3 1/2 days to go and so
far they have 13 bids and it's up to $83.
I have a Ham M that was only in use for about 3 years and has been stored
since the late 60's, it's one tough rotor. RM~