The Netherlands woman, who sent me the 7 chips, added this info (her translation from Google):
Holland Casino (trade name of Holland Casino N.V., established as the National Foundation for the exploitation of casino games in the Netherlands) is the only legal provider of casino games in the Netherlands. The first casino opened its doors in Zandvoort in 1976. Under Article 27h, first paragraph, of the Law on Games of Chance, the board of directors of the Gaming Authority can only grant licenses to one legal person to organize gaming casinos. That license was granted to Holland Casino by order of 17 December 1975. [1]

Holland Casino N.V.
Holland Casino

Motto or slogan
The only real casino

Creation
January 22, 1974

Key figures
E. van Lambaart (CEO), R. Bergervoet (CFO)

Headquarters
Main road 640
PO Box 355
2130 AJ Hoofddorp

Employees
2360 FTE (2015)

Profit
Increased 98 million (2017)

Website
https://www.hollandcasino.nl/en/

Holland Casino
Portaal Portaalicoon Economy
Holland Casino is a state participation. The State Secretary for Finance acts as shareholder. According to the 2012 coalition agreement, the company will be sold. [2]

Holland Casino is still paying the full net profit to the state, except for additions to equity.

At Holland Casino there are 6532 slot machines and 466 gaming tables. About 3,000 people work there.

In 2015, Holland Casino had 1.1 million guests with an average spending of EUR 99. [3]

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Wikipedia: https://en.wikipedia.org/wiki/Holland_Casino

Holland Casino logo
Holland Casino is a Dutch state-owned company and has the legal monopoly on gambling in the Netherlands, and has fourteen casinos located throughout the country. Profits from Holland Casino go directly to the Dutch treasury. In 2007, profit was around 267 million euros and in 2006 some 263 million euros. ... .......

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Robert