This knife is a mystery to me. The knife looks to be from the early 1900s, but the blade is most unusual in design. It is marked: Frieder Herder A. SN Constant Solingen Germany The blade is in new condition. The knife has some normal marks from carrying. My guess is that the blade was expertly fitted to the fine old knife. In any case if you like, bid. My starting price is unbelievable, considering the free shipping.If you have a minute, check out my other knives. I will be adding dozens from my collection over the next few weeks. Thanks for looking.