I hasve a SxS 16 gauge that I am needing some help researching. It looks to me that all numbers match. I can see some visible wear but for the most part it looks relatively in good condition.
It is labled a Firma Franz Kettner Koln. I have been doing research and found that it is a 16 gauge and is a European shotgun. I have not been able to find much more info than this, other than the history of this particular individual who made it.
This forum has shown to be extremely knowledgable with european pre war guns and I hope that there is someone that has seen this particular gun or guns similar to itself.
I have added some pictures to help as much as possible. Any help would be greatly appreciated. Thank you.

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