Identification Question

hey all, I've been lurking for a bit and recently got into shaving with a straight. My first purchase was off ebay and I was wondering if you guys could tell me if this was a koken barber supply razor or if not who made it.

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The box says Koken Crank but the blade only has Garantie Solingen on the tang. It doesn't really matter as it is a good shaver once I got it honed but the old history student in me wants to know everything I can about my tools.

Thanks,

Corey

In my Goin's i only see 2 entries and both not much help

WR Garantie Germany g. 1920-40 "W. Willms Germany" is stamped on the tail of the razor
or
Garantie g. 1900-20

I own a Koken razor, they are soligen made but they usually make there mark somewhere on the shank. you could just have a random box.

I have 7 days set from the same company. Still in NOS conditions as I have never had time to hone it.