You're right Ed, although they look similar, the Flxible roof/greenhouse and door tops are unique and won't match the same areas on M-M, or any other coachbuilt Cadillac.
Kurt, I believe the car was complete when sold at auction, no need to crucify the seller.
Obviously, the buyer is free to do with his car as he pleases, but it is depressing that such a rare coach survived mostly intact for over 60 years, only to suffer this unfortunate fate. It deserved much better. Now she's just another contender for Steve Loftin's 'Sad Pro-Car' thread... Shame.