POURING CAPS
To allow for any alcoholic drink to be poured stylishly, so-called "schenk-stoppen" (pouring caps) were devised.
A few classic pouring caps.
Leftmost picture by Stefan Posthuma, others from drank.verzamelt.nl.
Not an actual pouring cap, rather a purely decorative one. These were given to people who had been at the Plantinga company for 25 years.
The little card you got with the above decorative "Het Plantertje" cap.
Mass-produced plastic pouring cap.