I recently traded a kit of mine for a blue/olive badge white Ludwig kit. They are the sharped edge badge and the serial numbers start with 209xxx putting them 1979/1980ish. The sizes are 24 kick, 13 and 14 toms, and a 18 floor tom. They appears to that they are an acrylic, similar to the vistalites but they are opaque. Almost as if they are beefy plastic. I have been unable to find any sort of information on them. Any info or helpful hints would be greatly appreciated.