The man is believed to be between 40 and 60 years old, with a grayish beard and chest hair.
The autopsy showed he had five or six gold crowns, and a shunt in one of his heart valves.
He was found wearing a yellow Seiko watch, with a white face and black nylon band, Stuart McGuire chukka boots, between size 9 and 13, and had a non-legible mark on his upper back that might have been a tattoo.
Coroner's Sgt. Ted Anderson said the victim was reported by a bird watcher, and that the body was too badly decomposed to obtain fingerprints. DNA samples have been taken are sent to the Department of Justice, with hopes of identifying the John Doe.
Anderson said the cause of death was blunt trauma to the head, possibly from a fall from a bridge in the Bay Area.
Anyone with information pertaining to the identity of the man is asked to call Sgt. Tyrone Davis at 510-690-6549.