the label said it had enough food for 3 men for 3 days, it contained energy bars, energy drink, sugar, etc. The metal can was about 8" in long and 4 1/2" in wide, and 1 1/2" in thick
the price was $17.00 on sale
were these carried by aircrews? or life boats?

the can looked similiar to this, except it was marked Survival ration and dated 1963
are these rare or hard to get? it was still sealed.