US Army Specification No.12-24 sign box used In WW 2 at night with blackout lid so enemy can not see from the air. This marked and identified Of troop locations and hazards on the battlefield Roadways. When to get fuel and bridge ahead When to stop. The operation of this was used by making the sign from the letters in the rolled Paper work. This was mounted on the front bumper of the vehicle used for signaling convoys So they can proceed to there destination.
This is a rare item. Have not seen one of this kind Only from books. This is a very nice WW 2 Item. 10 cell flashlight batteries. Light bulbs inside. Has a push button on the outside of the Wood box. Glass cover . Please check copy Of Military instructions sheet.