Doing an upgrade to a seasonal "cottage" here in Southern Maine, and
this... Old Romex - no ground, no box, and, as the pencil points out,
mounting was done by way of a large spike.
Perhaps a "crossover" installation - electrician trained in knob & tube
trying to get used to this new fangled romex stuff? Boxes? we don't
stinkin' boxes - give me a big spike!