According to the current owner who bought it from the nephew of Mr Williams after his passing, the top was removed and painted but not the whole car. There is a receipt to match that statement.
The car spent it's entire life under a car port and not in a garage. The low milage is documented as is the entire car. AS a lifetime 1966 Buick guy, this is the most documented 66 Buick I have ever come across, period The only document not present is the build sheet, and hopefully that is in the car somewhere. But with all of the other documentation along with the August 66 Sales Master Record I have, who needs it. This car is the "REAL DEAL" folks although not as pristine as it could have been had it been in a garage. The present owner is a Corvette guy and has the presence of mind to only maintain this car as opposed to changing anything in the time he has owned it.