Hi,
I hope you can help me out. I saw in the Typewriter Database, that there was a Version (4X serials) produced. The number was fairly low with less than 3000 items.
https://typewriterdatabase.com/smithcorona.86.typewriter-serial-number-database#4x
There is no informations on this typewriter. As I see it lacks some of the features like a bell, a left platen knob and seems like a low cost variant of the version 4.