I found out myself about this egg......The crossed swords mark on porcelain is one of the most frequently reproduced porcelain marks, and it has been used by many factories in various countries. The mark on your piece is an underglaze mark, so will not fade. When marks appear to be faded, this is often a sign of a replica piece. Your hinged egg appears to be a reproduction piece, of porcelain, on brass stand, circa 20th century. The H W may have been used to suggest the famous Faberge designer, Henrik Wingstrom. The piece is meant to be used as a trinket box..If people are really interested in finding out about their items in a timely manner for a very reasonable price go to www.wiw2u.com that's where I found this info after looking and looking and looking...........