Here's a good Vintage General Electric Tungar 6V Battery Charger Model 6RB33B1. It power right up and has a normal hum.I tested the leads and it is putting out current. Looks like it had the option to hang on the wall or stand on a bench. Light is not working, likely a bulb.
Being 6 volt max and the Deco look, I'm guessing 1940's vintage here. Very cool piece of auto memorabilia. The item "Vintage General Electric Tungar 6V Battery Charger Model 6RB33B1 LQQK" is in sale since Thursday, July 18, 2019.
This item is in the category "Collectibles\Tools, Hardware & Locks\Tools\Mechanics". The seller is "2010youneverknow" and is located in Ellenville, New York.This item can be shipped worldwide.