It depends what it is?
Looking for LDO marked EK2s and items relating to U-406.....
It sort of looks like an oil bottle? Can you give use some context as to where it was found? E.g. was it found on the site of a transit camp or a bombing range? Cheers.
Strange object indeed. The screw cap has a machined rim which suggests frequent removal with the minimum of effort. For lubrication perhaps? It also looks like it was attached to something else on one side. In what context did you find it?
Location is old fortification used by Ottoman empire, Austro-hungaria, Germans... later was park ... wooded area
Found lot's of activity in location... spent rounds, shrapnel ...
My initial impression is the same as James's-it look like an oiler bottle to me.
"Much that once was, is lost. For none now live who remember it."