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Barbour Silver Co/International Silver Co
Barbour Silver Co. was organized in 1892 by Samuel L. Barbour, and others. In Aug. 1893, they took over some of the machinery and stock of the Hartford Silver Plate Co., organized in 1882 and believed to have been carried on for a short time under the name of Hartford Silver Co. When the International Silver Co. was formed in 1898, Samuel L. Barbour, who had been active head of Barbour Silver Co. for several years, continued as manager of that branch (known as factory A) and was made a director of the new Co. and remained for several years after the plant was moved to the buildings formerly occupied by the Meriden Silver Plate Co. Samuel L. Barbour was born in Norwalk, Conn. about 1865 and died in San Francisco, Nov. 11, 1925. I believe the piece you have is Silver Plate. Hope this helps.
Barbour Silver Co was a legitimate Co. You mention that is indicates, "Quadruple" and no mention if it Indicates "Quadruple Plate" which would indicate an authentic Barbour Silver Co. Piece. I would have it appraised to authenticate. A lot of companies where imitating makers marks and flooding the market with forged pieces for their own personal gain. Most likely your piece is Silver Plate as Quadruple Plate woud not be the mark for High Quality Silver such as, 925/1000 fine, with 75/1000 of added metal, usually copper, to give it strengh and stiffness. Use caution and do some research before you purchase any item of substantial cost. Hope this helps.
Maureen It sounds like you have the same piece I do It is a large tray with handle on the side, very heavy
I have absolutely no info on this but I will let you know that my grandmother received it for her wedding in the late 1940's along with a few other pieces.
Was there ever a time that Barbour did not put a mark on any of their pieces?
Thank You

It means they are not silver , there is several silver names that have nothing to do with silver and Brazil was one of the marks.
The in late 19th and early 20th Centuries, nickel silver flatware items were sold under a variety of names including Brazil Silver. These all tend to be silvery-looking alloys. They were advertised as being a superior alternative to silver plated wares because they never never lost or wore through the silver plating. Brazilian Silver, though, is not silverplated and nickel silver is not silver
Confusing isnt it , sorry I could not give you better news
Rob and Michelle