F W Engels Special Edition 'NEVER USED"

I stumbled across a "never used" razor, the blade is stamped with a logo of a boy and girl figure facing each other, and "Fried, Wilh, Engels" "Solingen". The handle tips are encased in sterling and an emerald green inlay. On one tip of the handle are the letters "FWE SE" in the green emerald material. The steel is very clean -- any suggestions about what I should offer the owner? Any advice about the razor? My guess is that the box looks like WWII era. RalphS