I do not check for and do not know if there is any issues that are not visible on outer case.
Vintage Brass Bullseye Flash-Light Bicycle Lantern Lamp WW1 Time
Vintage Usalite Flash Rairoad Hazard Light From British HongKong
Vintage Ash Flash Emergency Lantern Signal Light Red/Clear Lens * As Is *
Dietz Style Flash Light Vintage E0 Police Signal Lantern Oil Lamp Newyork 1900s
Antique Vtg Dietz Flash Light Police Lantern New York No 3
VINTAGE ASH FLASH Giant Warning Blinker /AUTOMATIC RED WARNING BLINKER NOS