Shakudo, I got my info from James Hanson's book on trade knives, and the web site
www.lanouvelle-france.com, that I am sure you are familiar with. Hanson shows two French trade knives with "integral bolsters" and dates one as 17th, and 18th c. The other as being late medieval. Lanouvelle web site shows a few with bolsters, but describes them, as best I understand it, as being forge welded to the blade stock before any shaping takes place, or as both are being shaped, which, depending on how one wants to look at it, is basicly integral. Maybe not technically so, but for all practical purposes, might as well be. Perhaps Mr. Hanson could not tell that they were forge welded on. Perhaps his dateing is off. If you have other sites, or sources, I would very interested. As far as the poured pewter knives, I never said they were trade knives. What info I have on them is from Kyle Willyard, and I am waiting to get more info from him. When I do, I will let you know. By the way, I really like your cartouche knives. Is the brass cast, or from sheet. I was thinking of trying one. The pins appear to be brass and flush finished. I thought that they were of iron with half round heads. Is either correct? In your opinion, can these be made from sheet brass? I don't think I would want to make them on a regular basis, but I would like one for a friend. Thanks for any info. Wick Ellerbe