I think I'm going to try the 0000 steel wool and WD-40, and maybe some 2000 grit sandpaper on the "before" side to see how it does compared to the MAAS side.
Then we'll see how a vinegar or lemon juice etch looks on this thing.
Then it's on to handle restoration. Anyone know of a good place to get jute or hemp string to re-wrap over the wood handle and hold down the bacabaca holder?
Edit: Federico posted the same time I did. Thanks! I guess we'll try the lemon juice etch first and then go from there.
Edit edit: The little copper fix is really a neat job. The brass one is decided less so. The hamfisted grinding

done to the blade after the brazing managed to not only take down the brass part, but also hit the bare blade in more than one spot.

You can see one hit as the bright patch in the scorched part of the "before" pic. I'll take some better pics of the brazing area tonight. I'd appreciate your opinion on whether this was a contemporary repair or a later US attempt.