Although this one wasn't the pencil I was looking at in that fuzzy ebay picture of a whole mess of pencils, when it arrived I had to give this one a closer look:
The pencil itself is pretty unremarkable -- just your typical, unmarked late 1940s or so pencil. But that clip!
How gothic is that? And the best part was that there's a patent number on it:
A few minutes later, I had a much better understanding of this pencil. The patent was issued to Harry Esterow on December 13, 1949 as Design Patent 156,413:
After I looked up this patent and saw the title of it, I went back to my pencil and gently wiggled and pulled on the clip until it came off. And whaddaya know. . .