so i found two razors today in my great grandfather's old garage. one is a dubl duck satinedge, and one is some kind of Weichsel brand. i have literally never even laid hands on a straight razor until TODAY, so i know absolutely nothing about them! that's why i didn't even clean that preservative stuff off of the blades, i'm not sure if i should, or how to, or anything.

I want everyone's opinion on these finds! are they nice razors (i've heard the DD is), are they valuable, what should i do with them?
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dubl duck satinedge razor
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dubl duck box and razor
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Weichsel's Texas Razor?
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Weichsel's box