Looks kind of like a military clip Eversharp, doesn’t it? But on closer examination, this is no Eversharp. This one reads "Neo" Duplex U.T.M. Patent No. 10130. There may be more numbers at the end of that patent number, since the stamp trails off a bit. Since normally a "duplex" pencil will have more than one color lead, I unscrewed the nose cone to see what was going on inside . . .
NOTE: This article is now included in the print version of The Leadhead's Pencil Blog, available anywhere you buy books, or also from The Legendary Lead Company.
To order, here's the link: Volume 1 at Legendary Lead Company
