Here's are some photos of the knife (click for gallery):

As you can see, it's a German Eye Stockman with reddish-brown jigged bone scales.
In the past couple days, I've done some restoration and documentation of his old shaving brush and my great-grandfather's (his father-in-law's) old safety razor. I'd like to do the same with his knife.
Which leads me to a few questions:
- What's the best estimate of its vintage? If I understand the GE stamps correctly, it's somewhere from 1970 to 1981, right? Is there any way to narrow it down any further? It seems like not many of their knives bore the "surgical steel" etch. I was wondering if that might help date it.
- Is there anything in particular I should use to clean the scales? An antique's dealer put me on to Blue Magic a long time ago for restoring just about any kind of metal or plastic. That's my plan A for cleaning the scales and bolsters, but I'm not sure about bone. I've yet to see Blue Magic damage anything, but you never know.
- The rusting on the backspacer is the worst issue. For the outside surface, I was thinking of using a narrow fine grit bit on my Dremel, with mineral oil to lubricate/cool. I have no idea if/how to clean the inside surface, though. I might be able to wrap some sandpaper around a narrow punch and use that, but it's pretty cramped. Is there a good way to do this?
- The shorter blades have minimal rusting, so they should be pretty straight forward. I've got various metal polishes at my disposal, including the Blue Magic. I'm not sure how to proceed with the etched side of the main blade, though. As you can see in the pictures, there are some rust spots smack dab in the middle of it. How can I best remove that without damaging the etch?
- Finally, there seems to be some warping on the tip of the spey-point blade. I'm not sure if it's an original defect or if someone sharpened it too aggressively and heat warped it, or what. The cutting edge itself doesn't seem to waver any; I think it's just a variation in the thickness of the blade. Do you think I can correct this with a proper edge sharpening?