This is a classic case of wife selling off deceased husbands hobby car. Probably no one she knows has a clue what the car is let alone what it's worth. I helped a widow a year ago sell three 124 spiders and two Triumph TR6s. My wife would probably put my cars out with the trash.
In the situation I worked on, the widow found out about DCfiats asking for help and that's how I got involved. You better write out guidance for your wife on how to dispose your hobby cars, my wife knows nothing about my Fiats but does know a lot of club members.
Eyeballs on the car will hopefully determine scam possibilities. The lady I helped knew enough to go to the DMV and get all her husbands cars retitled in her name so she could easily sell them herself.