It's interesting that the head "lugs" don't encircle the head tube at all; they look to me more like an aesthetic way to cover up the tube joints than to function as joint reinforcement as lugs typically do.
Also, the lack of any stem forward extension seems odd on a mid-century bike; stem to handlebar clamps without extensions were used in the late nineteenth and early twentieth century, but were mostly phased out by the 1920s.
