Yikes, that'll need some work. Looks as though it's been left opened up. I wouldn't be surprised if it's badly corroded inside. Cheap though and probably worth the asking price that was paid.
Just bought the 2 cylinder heads & other bits that the guy had for sale for £16…
The guy lived about 300 yards from the sea so the lovely fresh sea air has had a good go at the alloy.
Yeah they looked shite but worth a gamble if they clean up after a bit of work.