Extremely Rare SOE/Airborne Homing Pigeon Message Tube - Unissued Condition

This is a kind of item we have not yet come across before. This carboard box was intended to hold messages that would have been send back behind enemy lines by homing pigeons. These homing pigeons would have been dropped with SOE and Airborne troops. The tube could be attached to the leg of the pigeon. The tube is in unissued condition.