Thanks, Andy, for that great comment! I'm glad I've been of some help to someone! Never heard of Sinclaire? Oh my... Sinclaire's my favorite American glass company. Fabulous engraving! I'll post a few photos of Sinclaire pieces when I manage to register for the Glass Gallery, but here's a link to one:
http://www.cmog.org/collection/detail.php?t=objects&type=all&f=&s=sinclaire+engraved&record=0.
Bernard - wow, there's so much to read and assimilate in those threads! I got a kick out of this comment of yours: "I take "S&W" and "Webb" attributions from all but serious heavyweights in the USA with a bucketful of salt." Well said! Same thing with Moser attributions.
Speaking of Moser, their shaded wares are a product of a thin layer of colored glass sandwiched between colorless ones. In that case, though, the colored glass is only on part of the piece, which is why some of them have one color at the top and another at the bottom. I agree with some comment you made somewhere that in our vases the color is stretched out, so where the glass is thinner, it's lighter.
Interesting discussions about struck colors, too. I agree with this: "Plated amberina to me would be amberina glass over a white body." (Connie). And it's true, "amberina" in the US has been used by some glassmakers to describe a color combination rather than a struck glass. "Peachblow" is the same way.
Sigh. I was looking back through several old threads the other day and thinking there were comments I could have made, but it's hard to know whether the topics haven't already been raised and beaten to death in subsequent threads.