I bought this as an airshow lens and it didn't let me down.  There are a couple of example shots shown above.

Then we had the pandemic and as we know airshows didn't happen for a while.

Then my Nikon D90 broke!!!

I also have a Nikon Zfc but this doesn't work well with it, sadly.

So it's only been used just once.  It's in the original box with the documents.

I can't see a mark on it.

Photos are of actual item.