Benjamin Paulin, the son of the late French furniture designer Pierre Paulin, spends a lot of time on Instagram looking for knockoffs of his father’s work.

The Dune sofa, which Pierre Paulin conceived of in the 70s and which his namesake design firm manufactures by special order today, is often tweaked and replicated by interior designers. Resembling an above-ground conversation pit, a Dune-like sofa looks especially good in the sprawling, midcentury-modern homes that are strewn around Hollywood. Paulin often spots them in magazine spreads and on design-centric social-media accounts.