I guess I made a few assumptions about the current owner that were inacurate. But it still sounds like potentially a good deal with a promising and explainable history.
No radio? I still cannot believe that Chevrolet offered the Corvair without a heater!

Why would anyone order the car, omitting the heater! No heat, no defrost, and a major pain and expense to add it later! Sometimes the options list offered by the new car salesman in the 1960s could become real strange.
The Japanese manufacturers seemed to change the Detroit marketing methods when they entered the car market, offering Toyotas, Hondas and Datsuns that were fully equipped with a ton of convenience features STANDARD! There were a few options, but most things came standard with the car. Buyers seemed to like that, and Detroit changed accordingly. But a no radio option in a 1960s car... I guess it wasn't all that unusual. Some Corvairs did not come with rear side windows that rolled down either, and others came with rubber mats instead of carpet. Or metal covers instead of backup lights. Those chintzy bastards! UGH!