'Dallas' Star Larry Hagman -- Swanky L.A. Beach Pad ... Up For Grabs

Hey "Dallas" fans, get ready to break open your piggy banks ...'cause the L.A. penthouse iconic villain Larry Hagman called home ... officially hit the market for a cool $5.2 million.

Hagman -- who played the conniving J.R. Ewing on the show -- passed away in November ... and now his 3,029-square-foot ritzy beach pad has been listed by realtor David Solomon.

We're told it was the actor's primary residence at the time of his death.

The eclectic 2-bedroom condo is fit for a king ... it's one block from the beach and is rockin' panoramic ocean views, floor-to-ceiling windows, brightly colored interiors, a jacuzzi tub -- and a bedroom where the gold sheets match the wallpaper. Literally.