These are examples of the denominated Roulettes that were used at Kursaal Oostende in Belgium having different colors: http://community.webtv.net/BENEDICT/doc8 - In the two 1000Bef examples, the outer rims are the same (48mm; salmon) with the inner disks distinguishing each player by having different colors (these examples have pink and white center disks). The 500Bef had a mustard rim with different color disks. The 5.000Bef was part of the high-denom plaque set having the salmon 5.000 plaque. The true color is lemon/lime with an amber lunette; 50mm). The lower denominations (50-100) had 8 color disks with the same color rims; yellow 50; blue 100.

JB