Kosta Boda is a Swedish glass making company. Their glass is high quality and it is still being made and sold. The name that you show associated with the pitcher could well be the maker. What are you wanting to authenticate? You may be able to authenticate the shape by going to the Kosta Boda site and looking for the same shape and size, but authenticating the artist may not be possible without more research, or perhaps not possible at all. Lots of information available on the company site, and by google searching.
