Before going to eBay, I'll offer these 6 Netherlands chips here, for sale here if the offer seems reasonable to me. I show both sides of the chips, all in very fine condition. These are all I have of these chips, got them from a friend in Netherlands. I have no idea of the value of them.

Most are from closed casinos. At least half are not in the ChipGuide. Below I show the names on the chips, denominations, links to casino at ChipGuide.

Casino Schimmelpenninck 50 --Netherlands closed
http://www.themogh.org/cg_chip2.php?id=N3SCCS&sort=type

casino Maasbracht 10 50 --closed Netherlands
http://www.themogh.org/cg_chip2.php?id=N3MACM&sort=type

Casino Lotus 50 prob.Netherlands closed
http://www.themogh.org/cg_chip2.php?id=N3XXCL&sort=type

Casino de Landgraaf 10 Started on September 16, 2017, Netherlands, Limburg
https://www.casino-in.net/landgraaf

Holland Casino 1 euro Amsterdam, Netherlands
http://www.themogh.org/cg_chip2.php?id=N3XXH1&sort=type
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Robert