This is a Vintage Wusthof Dreizack Rostfrei Trident Logo 4582-162/20cm  8" Chef's Knife made in Solingen Germany. The Blade is 8" long and the total length of the knife is 13" long. It has wear of scratches and scuff marks.  It's been rode hard, but is solid and has a great feel.  Still a very solid knife. If you like Wusthof knives then this is for you. This one isn't marked Wusthof and has some age, maybe a precurser? I don't know much about the history of the company.