I think there is a resemblance to Thayne Smika, but it is thought he fled to Mexico. His car was found abandoned in Hollywood in late 1986. Thayne Smika if in the US in 1987 would have likely been living under a false name. Not wanting to be recognized could explain why his beard vanished and hair changed, although the photo of him is from 1983, a few years before he vanished. Smika sounds like probably a a Czech last name? The unidentified man a distinct Mediterranean look. I guess that doesn't really fit.