Unique asymmetrical glass vase designed by Sybren Valkema for Glass Factory Leerdam in 1981. This vase was on show at the 50th anniversary exhibition of the Gerrit Rietveld Academie (1968-2018) and the Sandberg Instituut (1990-2018): 'Gerrit turns 50, Willem only 28'. The vase was exhibited as part of the 'time capsule' called 'The symmetry of Diplomacy', in which the tendency towards symmetry is made apparent and overturned. It is described in the accompaning catalogue 'Time Capsule XIX - Checklist' en pictured in 'Time Capsule XX - Views'. This vase is signed: 'Sybren Valkema Leerdam Unica V 81062 H'.