antique american interior residential unusually-designed craftsman style salvaged chicago heavy cast brass four-light ceiling fixture with pressed glass shades

all original and fully functional early 20th century antique american interior residential craftsman style four-light ceiling fixture possibly fabricated by the r. williamson company, chicago, ills. the intact heavy brass ceiling fixture contains four hanging sockets with shade fitters and pressed glass shades. the chain and canopy are original and match the finish of the fixture. great overall condition considering age. Item measures 29" x 20."