reply to u/firefox2061 at https://reddit.com/r/typewriters/comments/1nqpvbk/i_ended_up_with_a_1957_olympia_sm3_trying_to_sell/
Take a close look at the online shops that are selling restored machines to see how they're signaling cleaned and restored machines. Professional photos, videos, and type samples will help significantly. The market picks up closer to the holidays and will help you realize greater value.
As you surely know, the bottom of the market for these in unknown condition and potentially shaky/iffy shipping is $120 and professionally cleaned, oiled, and adjusted is in the $550 range (without a new platen).
Shops actively servicing machines and putting on new platens are going to quote in the range of $150-180 for the roughly $100 recovering + their labor. It's rare in the market that buyers truly appreciate the value of a new platen. (Most don't even appreciate the value of a serviced typewriter either.) You're much likelier to get someone paying better rates when they can see and test the machine in person to appreciate how clean and well aligned it is.
You statement about the typeface is off (presuming I found the right listing) as this is very definitely not a Congress face. Try again using: https://typecast.munk.org/2011/04/23/1964-nomda-blue-book-olympia-font-styles/
You should also specifically mention that you've replaced the rubber body gaskets that commonly have compression problems on these SM3s.
Including a facsimile copy of the manual may also be helpful: https://site.xavier.edu/polt/typewriters/tw-manuals.html