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Those are sweet, is the W&B DE in the back ground yours??

I believe those are repairable, Sharpton and outback I believe have done this type of work. Hopefully they may be able to guide you.

That's a wonderful razor I would certainly leave it as is. Clean it up but don't change a thing. I would say in this case you would devalue if changing.
I'd guess very late 1890s early 1900s....