Studio Color 575s Lenses

I've got 6 studio colors...some with a lens that looks like a car headlamp more or less smooth but with 3/4 inch bands in a single direction. Others have a pebble like bumpy surface. I ordered a Fresnel to match the first type, only to find out when it got here that it has round concentric raised circles. Can't find a picture with description anywhere. Can somebody help me ID these? Thanks.
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