Robert Chambers was spotted out and about in New York Wednesday afternoon — and he appeared to be wearing a wedding band on his left hand.

The infamous “Preppy Killer” — so named for the vicious 1986 strangling of 18-year-old Jennifer Levin in Central Park — was released from prison last week after serving 15 years on a separate drug and assault conviction.

Chambers, 56, covered his eyes with a pair of sunglasses and wore a denim jacket over a white T-shirt as he talked on the phone during a short walk.

He gesticulated animatedly and appeared agitated while he spoke and ignored questions from The Post without getting off his phone.

It remains unclear whether the ring on Chambers’ hand was in fact a wedding band, but there has been speculation that he and his longtime girlfriend Shawn Kovell, 54, were still together as of his release in July.

Chambers remains under strict parole guidelines until at least 2028, according to state records.

He was previously sentenced to 15 years after taking a manslaughter plea deal in 1989 over Levin’s death, which he argued was the result of “rough sex” during a drunken romp in Central Park.

The 18-year-old’s body was found half-naked and strangled to death behind the Metropolitan Museum of Art.

A bicyclist found her battered corpse the next day and called 911.

Both ran in the same upper-crust New York City circle and had been linked romantically. They had been seen drinking together at Dorrian’s Red Hand Bar the night before Levin’s body was discovered.

Chambers famously hid from view and watched as police discovered and investigated her body.

He had a reputation as a drug user, heavy drinker and petty theft.

After initially denying any role in Levin’s death and changing his story numerous times, Chambers, then 19, finally admitted to killing her but argued he was defending himself from Levin when she became violent during sex.

Unable to reach a verdict after nine days, Chambers finally accepted a deal for a 15-year sentence.

He served his entire sentence and was released in 2003.

Chambers and Kovell met in 1986 before his trial began, and the two dated throughout his prison term.

They moved in together after Chambers was released, but in 2007 both were busted for dealing hard drugs out of their Manhattan apartment.

A year later he was handed a 19-year sentence — four years more than his punishment for Levin’s killing.