The debris field from a recent high-energy collision with a utility pole just north of Red Oaks Mill included another attractive hunk of jewelry:

I asked the guy who runs the towing service across the intersection if this was a “high-performance car / low-performance driver” situation. He said “Nah, the car was a piece of crap.” It apparently collided with the pole after pulling out of the adjacent gas station with entirely too much foot on the throttle; the young driver was last seen having considerable difficulty with a field sobriety test.
Anyhow, the labeling suggests it’s the right-side fog light from a Nissan car.
After removing various shattered plastic mounts and scrubbing off the obvious dirt, the lens didn’t look much better:

The bright triangle is one facet of the hood over the 55 W halogen bulb. The lens seems to be covered with a scattershot coat of gray spray paint or primer, rather than ordinary road grime, applied with surprising uniformity over the entire surface.
A quick wet-sand operation with 400 through 3000 grit paper, then some Simichrome, cleaned it up pretty well:

Repeating the whole process, this time with a vigorous circular motion:

It’s definitely got a used-car finish: nice polish over deep gouges.
Look closely to see 400 grit diagonal scratches headed upward to the right; I must use 600 or 800 grit paper between the 400 and 1000. I don’t care about optical clarity, just knocking back the worst of the damage will suffice.
Methinks it would look pretty with internal RGB LED lighting, although the optics are obviously set up for a halogen filament just under the edge of the internal hood. If I get it just right, the thing could project a beam across the room …
The very same dude passed by me within a month. Maybe the Volvo’s driver’s seat was marked by a brown stain? ;-) Third time lucky?
“3. kerta toden sanoo?”
High-speed crashes increase as overall crashes decrease. Hypothesis: some drivers need other traffic to keep them under control!
“The lens seems to be covered with a scattershot coat of gray spray paint or primer”
It could be Plasti Dip Smoke. Some folks use it to black out or tint down stuff on their cars. But Plasti Dip, if thick enough, can be peel off. If you had to sand it, might have been spray paint.
Back in the day, only the Pennsylvania Dutch favored a blackout color scheme on their vehicles. Nowadays, plenty of all-black / no chrome pickup trucks and lowrider cars rumble past us: they can’t all be Dutchmen! [grin]