A wooden-cased 4-cylinder coil box, early 20th Century, French
A wooden-cased 4-cylinder coil box, early 20th Century, French, the wooden case with hinged lid and fall-front, fitted with a bank of four coils marked 'Vibreur M.M' of believed French manufacture with contacts, the fall-front incorporating an Engl-Beez Patent 5-Volt meter, on/off switch, and series of nine ivory buttons, the case measuring 35 x 13 x 19cm overall, fitted with two mounting lugs and a base mounting lug (detached).

