I'm cleaning out my late fathers old machine shop, and found an old Growler they used back in the 50's. I tested it with an old generator, and it seems to work fine. I also did a continuity test, and the bulb lite up as it should. The gauge lens in cracked, but still quite readable. The price is $110 plus shipping. This is sold as is. Its very heavy for its size, but should fit a USPS flat rate box....... I also installed new wiring on the leads. I took the rear cover off today, and most of the old wiring has already been changed.