Corona Four Typewriter in Estacada, Oregon For Sale

I am selling this typewriter I found in my father's attic. I don't know very much about it, except it is a Corona Four. All the keys move when they are pressed and it has a spool of typewriter ribbon, but the ribbon is old, so some of the keystrokes are faint. A few of the keys stick. I pressed each key and it appears that all the lowercase letters type, but when using the "Shift Lock and Shift" button, only part of each key makes a mark on the paper.
The typewriter does have some damage. When looking at the right side of the typewriter, the piece that guides paper in to the typewriter is broken. I think the entire piece should be black, but it looks like part of it broke off and the paper guide is a silver metal. I took a picture of that area to show what I am referring to. It is the last picture in this ad.
I don't want to do anything that might damage the typewriter, so I have not attempted to clean it or do anything to restore it to proper working condition.
Please feel free to ask any questions you have. I will do my best to answer questions. I can provide additional pictures if there is a part of the typewriter I have not photographed, or if there is a specific part of the typewriter that you would like to see another picture taken at a different angle, etc.