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For $5.00 you can lose for trying. I'd say lay on about four layers of tape on the spine and try to set a bevel on your 200. The tape will probably wear so replace the worn layer it until you get up...

You're looking at 1860s or so. This blade is in very bad shape. The frown is pretty much a killer in combination with the spine wear. If it was only a frown there may have been a chance to restore...