You can probably search the name on this Board but I had copied some info that Winnie had posted in 2011 - here it is:
Veiligglass Marble Co. – Amsterdam – Netherlands
Info from Marble Connection Board – May – December 2011
Posted by Winnie – May 2011
It's true there was a marble company in Amsterdam.
Agood freind,Hans Bartels has looked in his fathers archief and found this newspaper article written by Jaap Stigter in 1959.
In my post "speaking of flames", I already mentioned the possible existence of a factory.
Then I also talked to a fellow who was born and raised in that neighborhood.
He told me he remembered the factory very well, he picked up marbles as a child
Here is a brief translation of the contents of the article.
Dutch marbles roll over the globe.
Born in Amsterdam in glowing colored glass flow.
The marbles roll over into English,French,German,Ethiopian,Australian and Cuban children.
The large German manufacturing has disappeared since the war.
Netherlands has only one marble factory in the Realengracht.
France also has a marble factory.
The Dutch marble factory made each year 50 million marbles in different colors (15mm 17mm),those obtained by mixing metal oxides with glass mass.
10 years ago they started production.
In the beginning,they experimented a lot and the production process amounted to much handwork.
Finally they succeeded with the help of engineers to design their own marble machine.
How is that?
i think they have made swirls....
winnie