"Brooklyn" Combination BatteryBrooklyn Dry Cell Battery CompanyA battery devised to generate both galvanic and faradic current from six dry cells housed within a wooden case with a damaged leather strap handle. Upon opening the case, the main panel consists of a large oscillator coil mounted on a top plate, with an adjustable induction core. Two switches adjust the galvanic and faradic current to the connectable devices. Under the lid of the box are the instructions for use.still image