Gilt metal tin approximately 11 x 8 x 2.5cm that would have contained a large block of chocolate. Text on the lid reads 'Emergency Ration - Purpose of Contents - To be consumed only when no other rations of any kind are procurable. To Open - Strip off band. Insert coin in corner groove and turn. Notice - not to be opened except on order of an officer'. The tin is in good condition but has minor dents, surface wear and corrosion. As used by the RAF and other armed forces during WW2. Empty. Stock code S24633.