Original Army Beacon Light, dated 1917 is used condition. Missing half of the rear leather strap, the bulb is burnt out, shows some paint loss, inside has surface rust and corrosion. The good news is, I took a bulb and battery from a working Beacon Light in my personal collection and it worked. A great little project! You'll need a 3.8 volt screw in bulb (a 4.5 volt bulb would last longer but I don't know if it will fit) and 4.5 volt batteries can be found on line. I personally use WWII Soldier batteries: https://www.wwiisoldier.com/product/wwii-signal-corps-battery-reproduction/. Again, battery not included.