Seller: dekoch (77) 100%, Location: Wausau, Wisconsin, Ships to: US, Item: 202771618290 Signal Electric Corp. # 178 Portable Double Cell Faradic Battery Quack Machine. This seems to be the most common description for this antique medical instrument. Some references state that it was sold by Montgomery Wards. The photos show that the instrument is in good condition. There are several cylindrical metal electrodes with wood handles to be attached to the accompanying wires, as shown in the photos. There is also a metal plate with an attachment point for electrodes. The base of the wood box would have contained the batteries to supply the current for the electrodes, and the wires are visible in one of the photos.