Antique Underwood Sundstrand Cash Register Adding Machine w/ original tape

Description

Selling "For Parts", as I can't confirm that it works properly.  I do not know how to thread the roll of paper, nor do I know if it has ink.
All the buttons depress and gears operate smoothly when the handle is pulled forward and back.
Machine sits sturdily on a flat surface.
Handle has a quarter inch give at the base but works fine.
1 screw missing (see last pic)