I would suggest that given the condition...the efforts to even stabilize may not be worth the cost and effort.
Restore...well
Capt Dom....simply having a stainless anode will do little for a restoration...while this will facilitate the cathodic reaction, this will take material away from the artifact in the reaction.
You need to have a a counter anode to replace the electron produced by the anodic dissolution..typically that is a platinum or other high density material such as graphite. This will act as an inert material with zero net exchange of material.
Luckily, while platinum anodes are expensive, there is no loss in the process.
I have used graphite sheets, and they are cheap compared to platinum, the results are not the same, and one uses quite a bit more, so you have to watch the process more closely.