Are these cd or ceramic? As far I as know CD is the hard ano grey version, ceramic is the one with the special black / speckled breaking surface.
These were designated CD Ceramic (laser etched on the upper rim), the upper surface is CD, the braking surfaces are deffo ceramic.
@Mr_Bump started
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These were designated CD Ceramic (laser etched on the upper rim), the upper surface is CD, the braking surfaces are deffo ceramic.