Hard to see but its engraved crudely 153J. Another strange thing is the bowl part is only 5/8" deep then the round part is open space.
So this could be a gas lamp that was fix to a wall. I can see that. Its just that I found it in the middle of the woods nowhere near a home site or anything. I guess stranger things have happened! And there is no residue from what I can tell. I have found clay pipes and they never had any residue except that burnt look. I did find it in the area of a Rail Road so first thing I was thinking it was a 1800s Chinese opium pipe from the workers that laid that built that line. Now that I see its threaded and engraved it cant be that old.
Would a gas lamp be built with wood? As a pipe I always imagined it having a long wood stem something like this. 
The more I think about it the site I found it is so remote with very steep terrain it makes no sense to find a gas wall fixture unless it was some how portable.
I guess I always liked tell people it was part of a 1800's Chinese smoking pipe. Story just doesn't sound as cool telling people its part of a gas lamp. Or worse it's modern.
... I agree with the hookah pipe. I can't find a match to it online, but it's very similar in enough ways, and the marking is done in a way that brass items from the same regions are often marked.