1971-1973 Swinger Tail light lenses

I was wondering if anyone has any information on 71-73 swinger tail light lenses. I noticed when tearing my dart down my lenses have the same numbers stamped in them and I thought there was a left and right side for the lenses. I’d like new ones because mine are junk. I found one nos lens from a member a couple weeks ago so I now need to find the other three. Classic industries sells a left outer and a right inner which I’m not sure why they would not have all four. So if anyone has any info on what the numbers stamped in the lenses is and any leads on some nos lenses or like new lense with the painted silver trim not the stainless trim I would greatly appreciate it. I found a set at the mopar mall website but I’m not spending over $500 for lenses. Thanks.