Farewell dinner Mr. Hamel (Dutch) 17 March 1921

Farewell dinner of Mr. Hamel on 17 March 1921, most likely with colleagues and friends from the Netherlands. This as my grandfather Pieter Marks (1893-1981) was one of the attendees. He's the young man sitting on the right on the ground before the table. Not sure who Mr. Hamel was. One G.S.D. Hamel was consul-general for the Netherlands in Hong Kong at that time but my grandfather was employed by the Dutch India Commercial Bank (Dutch East Indies Commercial Bank, the 'Nederlandsch-Indische Handelsbank'). G.S.D. Hamel was consul-general from 1916 through 1920 when he left on grand leave. Some information about G.S.D. Hamel is available here.