CH 1997 Z103-Z108 Die Post - Damit wir uns näher kommen, 6 connected stamps cancelled Aarau

Switzerland 1997 Special stamps, Die Post - Damit wir uns näher kommen - La Poste nous rapproche - La Posta per essere piu vicini - La Posta per ans avischinar,
connected stamps, 
3 stripes of two, 2 stripes of three and 1 stripe of four, cancelled "30.05.98 5000 Aarau 1", luxury quality,
Catalog SBK Z103-Z108 (stamps 929-932), Michel - (stamps 1625-1628).