Looks very Midland'ish to me. Check out the Midland catalog from the early 1900's. Same action...jones underlever with pin thought the bottom of the lever (higher quality guns usually would have the pin through the top). Looks to be a pretty common trade action that midland would've made for various houses to finish or put on their shelves in an already finished state. Higher quality guns would also usually have a "bump" on the trigger tang bow to help keep the jones lever over and locked.
Have you removed the locks and checked for a lock makers name? There probably isn't one, which would further indicate a lower quality trade action. Lower quality doesn't mean it's a bad gun or junk, far from it actually. It just means there were actions that were a couple steps up in price point.
