Thread: Inherited my grandfather's razor. Before I screw it up, is it worth anything?

My grandfather recently passed away. When my family and I were cleaning out his house, I discovered a straight razor tucked away in a desk drawer. I've always wanted one, so I claimed it. However, it's pretty vintage looking and is in excellent condition. I just want to make sure it's not overly valuable before attempting to use it as a beginner.

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The box reads "J.A. Henckels Twin Works, Solingen Germany, New York" The handle appears to be made of bone or ivory (possibly celluloid, but it has a slight organic texture to it and is not translucent). One side of the shank is inscribed "Made in Germany" while the other side reads "82" and "Hugo Koller" with the Koller mark (an eagle).

Does anyone know anything about this razor? Comparing the Henckels logo on the box to the PDF guide I found here, I'd guess that it was made after 1969 but I'm not sure. Thanks!

Edit: Do I have the wrong box for this razor? Why would the blade be marked by Koller but the box be labeled Henckels? Both the box and the shank mention Solingen, Germany though. Is the blade made by Koller and then assembled by Henckels?