A shame its been so badly scuffed up. The 118 is one of my favorite cameras - I use it often. Moving the DOF scale to the winder position seems an odd choice, because the DOF dial moves as you wind on each frame. It also appears that the original Rewind knob (where the DOF scale is mounted) is not the original: the machining style doesn't match the Advance knob. There were two styles of machining of the Advance and Rewind knobs: one with vertical furrows and one with a kind of diamond shaped hatching. Often, one or the other of these knobs was replaced during servcing/repair and the new knob is a mismatch for the original.
Also, the viewfinder component is not the original the camera was mounted with: those often fell apart and had to be replaced (The original was a housing of three separate pieces: body, front panel and back panel, and the front and rear panels had a way of falling off too easily). The Viewfinder on yours is the style that was used to replace the original when it was sent back to Kodak for repairs. All three of my 117/118s have the replacement style viewfinder.
Chris Sherlock has many excellent videos demonstrating the disassembly and servicing of many of the Retina models, so I urge you to have a look, even if you are only curious about whats under the hood of your new camera:
The servcing of the 118 is similar in many ways to what you do with a 010, which is covered quite thoroughly here:
https://www.youtube.com/playlist?list=PLDDcV5sY4JWKa-2_3org8hCJ-Ua3ZQ3cP
However, should you opt to service the 118, beware that removing the Advance knob is NOT like that of the 010, and if you attempt to simply unscrew the knob, you will break it! (Best to send it to Chris for proper servicing, should it require it). The Compur shutter is fairly easy to disassemble and clean, and the 010 video tutorials will tell you most of what you need to know. There are design differences between the Compur in the 118 and the 010 of 15 years later, mainly in how the shutter lever activates the B or T setting (DO NOT attempt to cock the shutter to use either B or T! They work WITHOUT cocking the shutter on this model. )
Are you going to run a roll of film through it to see if it all functions?
Paul