There was good news and bad news. The good news is, since I live close enough to the Ohio Show venue that I come home on Thursday night, I checked my mail when I got home and lo and behold, my package made it in time. The bad news is, after showing it to people Friday . . . and Saturday . . . and Sunday, no one has been able to tell me anything.
When the pencil is disassembled, it’s even simpler inside than it looks:
The inner portion has little nubs which engage the screw threads on the outer shell. As far as a “mechanism” goes, that’s all there is to it. The lead is simply stuck in the end of the inner portion. It’s kind of like a Dow, but with a screw drive rather than a slider.
The pencil is unmarked. Can anyone shed some light on this?