Posted this in the other thread, meant to post it here.
I start any cleaning with a good spray down with WD40, scrape off any active rust with a single edge razor blade, then 000 steel wool.
Clean between the scales with a paper towel wrapped wood coffee stir stick. It may take repeated applications of WD40 to get clean.
Now you can look at what you have. For most dull blades, a light sanding with 600 W&D, wrapped around a wine cork, followed with 1k will leave a smooth finish that will polish well with any good metal polish and a paper towel.
You will be amazed what 15-20 minutes of sanding will do for a metal polish hand finish. Most scales will polish up with good metal polish. Make sure to sand in both directions, there are tons of post on hand sanding.
You can clean the tang pivot with a coffee stir stick wrapped with W&D or steel wool and a brass brush.
Professional restoration is all about time. Unless the razor is rare, unique or has personal value, most are not worth the cost of professional restoration.
Clean, hone and use them. A lot of “restoration” can be done with simple hand tools and time.