Antique Underwood No. 5 Standard Typewriter 1920's As-found For Sale

Offering a 1920's Antique Underwood No. 5 typewriter in untested, as-found condition. It looks to be intact, but I have provided many pictures for you to check, as this is not my area of expertise.
The keys stick as might be expected, but it is otherwise untested and is being sold for parts or for restoration. Most of the mechanisms seem to work/click. There is some rust inside and around. Please see all photos.
I do know that the Underwood typewriters of this era are highly collectible, so this might be a good piece to bring back to it's former glory with a restoration.
Fast shipping...thanks for looking!