You can examine a real one and a repop and immediately tell the differences very quickly. For one, the aftermarket ones have chrome on the sides of the lens perimeter, not just on the facing like GM ones do. That's a dead giveaway because the GM ones were cheaply done with chrome hot stamping pads. Mostly they were silver painted around the side edges of the perimeter. Additionally, some backings were all chrome like the Ebay ones, and other times a gray plastic. I believe the "earlier" versions were gray plastic. The backing section was glued to the front lens and the glue had a whitish-clear look to it. And it's STRONG glue. But not placed too neatly. Can't see it in place anyway, but GM vendors were sorta sucky in the excess glue department on those front parking lenses. It does seem to have the tissue paper wrap that wrapped around the facing of the lenses. Most GM ones came that way. I say most because a few times I've had them where they were just a part in a box. Nothing more, nothing less.
That GM parts bin website one MIGHT be something worth checking into if you needed one. Provided they still have it available. 9 times out of 10, they won't have one in stock. Don't know how long ago their inventory was updated. But you won't know if you don't ask. Those are GM websites that are SUPPOSED to only sell GM parts from a GM warehouse. Not for third party or aftermarket stuff. After shipping and tax, it's around $45, provided it's in stock. Which still isn't bad.
