how did the copies of the film London After Midnight get lost and destroyed?, the one with Lon Chaney Sr.?

Question

anybody else curious on what happen to this film?, London After Midnight from 1927, people say it's the most famous lost film ever and no known copy has known to have survived, I wonder why not a lot of copies of the film were made in the first place.

Answer 1

It is believed that this film existed until 1967. Inventory records indicated that the only remaining print was being stored in MGM's vault #7 which was destroyed by fire in 1967. By that time, all other elements had been destroyed or were missing.