Old holophanous suspension goes up and down

Authentic and old suspension in holophanous glass, early twentieth century, model called "go up and down". Complete with all the original elements, the pulley and counterweight are porcelain, the brass claw, the twisted white thread is original. The frosted holophanous glass tulip is superb. In excellent condition and functional. Bayonet bulb not included. The counterweight works thanks to small balls present inside. Tulip height: 11cm. Tulip diameter: 16cm.