I found a clip porporting to be Lon Chaney from London after Midnight (1927) at http://www.youtube.com/watch?v=aFk36pizlcM.

Basically, it turns out to be done by Rick Baker, the master makeup artist but it's well-done enough to make us stop and look.

I have more interesting clips, including a short interview about Mantan Moreland, at my homepage.

Virginia