SPIT SHINING NOS LENSES?

[KLONECO]

I have tried to locate a post concerning this subject? none found!! So I ask a simple question? best way too clean, (wash) & polish original lenses? be it tail light, marker lights, etc? can it be done? if so?....feel free to help out in any way possible? I have 3 sets of lenses........all 3 are original 1 pair being nos in the box! (hate too waste good parts ) rather use the older ones! for a nice car not a concours! I would rather sell the NOS ones to a person in dire sraights! just thought someone had a "short cut" instead of wasting good "top $ parts" parts melting plastic etc.....