#1. The item in the pictures, is that the material or the container?
container otherwise the film would have been damaged

#2. The item is clearly marked. Can the markings be used to determine its origin (yes, I know it says "made in W. Germany").
any lead containment stolen anytime between 1964 + (when we put tac nukes over there)

#3. Can the markings be used to determine its age?
yes

#4. Can the above information be used to determine WHERE it was stolen from and by who?
no because the container is just that.

Also, our government (and allies) keep strict track (so they claim) of all uranium/plutonium/etc. If this is from one of those, our FIRST responsibility would be to FIND THAT LEAK and determine how much material has been stolen.
do you know any quartermasters and what the (obvious) problem is?.
thanx,
bill