A great item to bring to GMB as your first piece. As Max says, welcome. You have also quickly had the help of Ivo, whose opinion most of us have greatly appreciated at one time or another! Kosta Boda is out of my knowledge sphere but I know there must be several collectors who use this site. The pattern numbers may be explained in an earlier post. By searching GMB under Kosta Boda will hopefully gain you some more information relating to this piece. Hopefully collectors will add more, how old this marrow design is and who designed it etc... Good luck,
Robert (bOBA)