Diving into the catalogues this afternoon:
Walther 1934, page 23 Kopenhagen section shows this centrepiece exactly as we thought to be a must:
bowl # 44133a and medium sized vase # 44112 height 135 mm
The vase is called 'Löffel-Becher-Form' which means spooner shape. On another Kopenhagen-page the English description for it is 'celery'
Thank you, Nige! :kissy: