Smith Corona SD 770 Word Processing Typewriter Spell Right Dictionary Model 5F
The ribbon is dried out and faded when typing. I would recommend changing the ribbon.
The keys on the left side have yellowed slightly. I have not attempted to brighten them up. The Typewriter works as it should and does Type well. The ribbon is older and has dried out but it does still type on the page as shown in pictures and the ribbon slides smoothly from side to side.
Please see all the pictures for the overall condition and measurements.