Sterling Handled Handmade 10.25” Fish Knife and similar items

One of these truly unique one-of-a-kind items that we simply could find no comps on. Another one like it seemingly does not exist. Note the slanted end. Incredibly well made and very solid. There is a gap between the blade and handle that would make one think it?s come loose but that?s not the case. Knife is 10.25 inches long. Normally if it?s a sterling handled item, we determine whether or not there is a market for it or if we should just scrap it. No question we were not scrapping this one even if we can?t figure out who made it. Hoping someone collects sterling and/or sterling handled fish knives. And the handle looks to be very thick - perhaps a full millimeter thick. See photos and note the shell design on one side. If you think you may know where or who made this, please let us know! Will ship USPS with tracking to winning buyer