This unique glass object from the North Sea series was designed by A.D. Copier in 1980 at Studio De Oude Horn. Copier was inspired by the North Sea for this work: a wave of bubbles flows up from the bottom. The clear glass object is decorated with a white with blue dot. The bottom is signed with diamond pen: "A.D. Copier AD 80.54 JO oude horn". From 1978 to 1991, Copier designed unique glass objects at Studio De Oude Horn.