I bought a Pfaff 130 that had a coating of something that I was never able to ascertain. It reeked but not like cigarettes. But it smelled kind of familiar. Man, I hated cleaning it. But, that film probably protected it because the machine's clear coat is in very good shape. I've decided that for many years, it was sitting in or near a kitchen and the fry oil and other kitchen fumes created that crusty film that covered every single square millimeter and orifice of that machine.