Skepticism continued Saturday over a rusty knife that Los Angeles police are examining for links to the O.J. Simpson murder case.

Experts and prime figures from the case largely agree that the knife — allegedly found 18 years ago at Simpson’s Brentwood estate but not turned over until now — is likely a hoax or unrelated to the case.

It has been alternately described as a folding Buck knife and as a fixed blade.

Dr. Irwin Golden, a coroner who examined the wounds of victims Nicole Brown Simpson and Ron Goldman, told TMZ that a folding Buck knife could have caused their injuries.

But former LAPD Detective Mark Fuhrman, who originally investigated the murder scene, said the blade on such a knife would have been too big to have caused Goldman’s stab wounds.

“A larger knife can’t create a smaller wound. End of story,” Fuhrman told Fox News Radio.

Former Simpson lawyer Alan Dershowitz, meanwhile, told CNN it would be impossible to retry the football star, who was acquitted in 1995. Even a federal civil-rights prosecution would likely be barred because the statute of limitations had passed, he said.

The knife was turned over to police last month by former LAPD cop George Maycott, who said a construction worker gave it to him after unearthing it in during the demolition of the Simpson estate in 1998.

Maycott said he was working off-duty security for a movie shoot when he was handed the knife, and that the LAPD was not interested in it at the time.