New old stock, original engine cases for Sachs 505 engines.
These are Sachs 750 000 123 which Sachs says is for 505-1/A, 505-1/C, and 505-1/D engines.
This is just for the case halves themselves. No internal parts at all.
New and never been used. Still, a scuff here or there from riding the shelves for decades might be present. They are nearly 50 years old after all.