Hello,
I think you made some great finds for great prices!! James Adams Dwight may be the maker of the stack rings--he was a silversmith and watchmaker

? hard to tell from pictures if they are that old, but some great websites out there that can help research the makers marks. Some of the Taxco stuff that sells real good on ebay is due to the makers of it not just because it's Taxco....I belive anyway. Do your research on the makers before you "scrap" your jewelry. Also, the old Norway pins bring in more (usually) than the scrap value. The turquoise necklace looks new?? again, hard to tell. Good luck!