Hello, I'm looking for some help on properly identifying this Marx accessory. I got this from an estate sale, it has the Marx logo on the bottom, general construction looks like all other Marx towers I've seen (rotary beacon, etc.), except this one vibrates to cause the searchlight to rotate. I know Lionel made a newer version of the 394 rotary beacon that vibrated to move the beacon, did Marx as well? Or did K-Line? Hopefully pictures post. Appreciate any input. Thanks!