Not knownPolished brown wooden box with a metal handle at the top and with a metal chain attached. The chain has a key at its end. Opened box - One side holds two metal rods with a wooden handle and plastic cord. The other side has several knobs (brass?) attached to a fitted piece of wood across the top. Both sides of the box each have a small hole.Engraved in the lid - 'Dr Stohrer / & Sohn / Leipzig'dr stohrer and sohn - leipzig, cased vibrator machine