Hi, here are some pics, and some info a friend of mine sent me asking what this might be. I think it is some kind of a signal device or flare projector??
Here is what my friend said about it:
"Its about 1930-1940 and you put it in the ground.
You can put a blank cartridge in it and cock the splint and put a long small string near the ground (foto 6683).
The tube is from a 08 or 08/15 or MG 15 and there are two marks with eagles an 2 numbers. "
Any help and info on this device will be appreciated.