A Kampfe Star One lather catcher with a Treet blade. This model was being produced as early as 1902, but if mine is correctly matched with the case, it's an edition that was made in 1919. Will take either wedge or standard SE blades.
Right now it's on my come-back-to-it-later-and-figure-it-out list. First three shaves were not disasters, exactly, but I was scraping skin and ending up with irritation. Not even as user friendly as an Open Comb Micromatic, let alone a Gem 1912. Probably a different angle from either of those.
“Of the uncertainties of our present state, the most dreadful and alarming is the uncertain continuance of reason.” Samuel Johnson