Hello! I've been trying to identify my great-grandfather's typewriter for over a decade now with no success. I've checked databases and tried looking up the extremely odd serial number; thought I would finally ask some experts.

It's an Underwood (No 5?) with no model number on its front. Instead, it just reads “Special.” The front panel is colored a red/maroon/burgundy instead of black.

The oddest part about it is the serial number. I've included a picture of it as I'm not sure anyone would believe me otherwise. The serial number reads W, U, then two upside-down 2s, a poorly stamped 4, and a 3. Am I reading it wrong?

Any information would be helpful. Thanks!