Bore is nice, with strong rifling, all but two numbers match, (small parts, take down lever and plate). Can't make out the wood based mag. No import mark that I have seen. Stock attachment was removed (common practice in the day).
Since I was not alive in 1917, I can't tell you what when how, etc. What you see is what it is.
$2600 firm (what I paid.)
Artillery P08s range all over, $2600 seems to be on the extreme low end.