Since I have a 1972, I will be interested in what this sells for.

https://www.mecum.com/lots/SC0517-281671/1972-datsun-240z/

It is WORTH what you are willing to pay for it. But to answer your question in dollars the bidding will stay south 50K.  The auction fees and probably a reserve on it will get it in that range. I have a problem how some people ask, "What is it worth" If a vehicle like this falls into your possession in is really PRICELESS. Instead of asking what is it worth, as yourself, "What am I willing to pay" Good luck with the bid you probably have 50K50K hidden in the bedroom mattress!

This will be fun.