Vintage, 4 socket cluster, keyless, made by P&S (matching)….. The interiors have been detailed and are VERY CLEAN!!!! Included are 5 new shell and cap liners…. VERY NICE PATINA on the shells, All have a headless cap set screw…. All have been stripped of old paint and lacquer…….. Also, I gently brushed each shell by hand with a very soft brass brush to remove any cleaning reside…….. Ready use in your restoration or steampunk project….. Check out my other listings for more lamp parts…