At a used car dealer auction I'd expect what you describe to bring near scrap weight value.

A classic dealer is likely to go for something in better condition and a regular used car dealer will be running away. ( Unless regular dealer is a buy here pay here in the "hood" where it might have a chance of selling. )

As cars get older, the "driver" class cars continue to deteriorate, but low mile one owner cars are continually cared for so nothing is left to replenish the "driver" class.

I'd expect the market is pretty narrow for large old MB.