As others have hinted, looks like an early Snyder-built motorbike. The straight pencil thin bridge between the seat stays is different than many later Snyder-built motorbikes. Also, less obvious, until one thinks to look, is the frame size; the head tube is a taller ~4"+/- and not the more common 3.5".
Also the so-called "flush" joints - they stand-out like concave deep sockets(?), almost appearing that an amateur fitter drilled an oversized hole in one pipe and then brazed another smaller pipe into that one. And the chain stays might not have volcano joints at the bottom bracket.
I have seen these bikes sporting MW Hawthorne "Trail Blazer" head badges; (thinking 1932-ish?).