Website showing a zombie knife
Second image Google found for a zombie knife. What style of historical knife is that and does it matter? Apart from a few details, of which the guard is a minor one, I think it's fairly close to the OPs knife.
Whether it's a Kopis, seax or any other kind of knife in style it's not got the appearance of a knife in common use today. It's not utilitarian in design for modern, legal uses afaik. I think customs and I agree, confiscation was the best option.
Second image Google found for a zombie knife. What style of historical knife is that and does it matter? Apart from a few details, of which the guard is a minor one, I think it's fairly close to the OPs knife.
Whether it's a Kopis, seax or any other kind of knife in style it's not got the appearance of a knife in common use today. It's not utilitarian in design for modern, legal uses afaik. I think customs and I agree, confiscation was the best option.