My buddy's grandfather has a Walther Side by Side in 16 gague... i've never seen this gun before. He said he got it in Germay from a german soldier in the early 1940's during WWII. Anyone out there know where i can find some info about this gun. Any idea what it might be worth? There doesn't seem to be serial or model numbers on it so i'm not exactally what it is. All i had seen on the barrel was a walther logo and the gague...

Thanks