Rare box of (empty) trip wire flares

Rare box of German made trip wire flares in excellent condition. The Alarm Leuchtzeichen were designed as booby traps to be placed around the perimeter of a position or encampment. The box contains 7 of the 10 smaller boxes for the flare sets. Each box retains its cup, two nails and trip wire. These flare sets are rare to find, but I have never seen one with the over box marked ‘bkwz’. A must have for the ordnance or flare orientated collector!

This box is of course free of any flammable or igniting parts.