As a celluloid heartthrob, Robert Taylor donned western boots and jeans to portray a gunslinger in Billy the Kid and a lawman in The Hangman. He dressed the same off-screen to ride horses on his 112-acre ranch in Mandeville Canyon.

Taylor died in 1969, but the Brentwood ranch, with its 12-bedroom house, guest quarters, rolling lawns and wooded hillsides, still bears his name. The estate, extensively remodeled in the 1980s by a rock-radio mogul who turned the stables into offices and apartments while leaving the horseshoe-studded stall doors intact, is slated to be sold at auction Friday.

A number of parties have toured the Robert Taylor Ranch, one of the largest residential properties on the Westside and recently listed by Hilton & Hyland at nearly $19 million.

Listed over the years for as much as $65 million, the property will sell to the highest bidder — “without reserve,” in auction parlance. The auction will take place on the grounds.

The Western-inspired, 11,700-square-foot house on the property has 34 rooms, including a bar and casino room with spinning, colored lights. The plumbing needs work. The compound includes a pool, a faded tennis court and the stables-turned-living quarters and offices. The structures take up just seven acres of the rugged hillside property.