Hello all,
I picked up this periscope 30 years ago in a garage sale and would appreciate any help identifying it.
I think it is a trench periscope, absolutely no makings on it, well made with 2 sliding viewer covers and the optics are nice an clear.

11" long x 1.25" square, the housing is aluminum tubing as are the caps on the prisms and the slide covers.

The only steel is the bayonet mount, can't weight more than a few grams, looks like it might have been green at one time but now is dirty grey-black.
Thanks for any help.
Strange small periscope? Strange small periscope? Strange small periscope? Strange small periscope? Strange small periscope?