I tried sharpening with Photoshop, but the picture is too small and too compressed to be able to tell if there was anything before.
In all honesty, I don't fret or even question cracked bezels anymore... or other parts starting to crack/break on CRT monitors for that matter.
Not all of them, but on quite a few, the ABS plastic becomes very brittle. At 20+ years now and considering their weight, it's just bound to happen to just about every CRT sooner or later.
Actually, the timing of this thread is kind of amusing, as I just picked up an LG Flatron CRT monitor from the flea market today with much worse damage. Basically, the right side has a huge hole in it - bigger than my hand. I asked the seller what happened, and he said something bumped into it in his car. At first, I thought it must have been something huge that hit it to cause that kind of damage. But looking at the metal shield underneath where the hole in the plastic was, there wasn't even the slightest of a dent in it anywhere... and those metal shields are pretty thin, if that's to hint anything. So I pushed on the plastic a little more where one side of the hole was and twisted it a little. It snapped easier than dry spaghetti - it was that brittle!
And BTW, this isn't my only monitor with plastics going so brittle. I have 16 CRT monitors in my collection, of which 6 are starting to crack really badly in various strained places. In particular, I have a 15" HP and a 19" Dell that both developed really cracked bezels over time just by sitting on my desk, with the crack getting bigger and bigger over each year. One another two (a 15" Dell and a 19" Illyama), it's the bottom underneath the base that has started to crack. So most likely, all of these will need new cabinets built at some point, as the plastic simply isn't going to hold them.
In the case of a cracked bezel - this is usually due to the fact that the CRT itself is actually held onto plastic posts that are part of the front bezel. The front bezel is then held onto the rest of the monitor's plastic body - at least that's how most late and cheaper 15/17/19" monitors are build. On the other hand, some of the older and/or higher class models have metal chassis that reinforces the mounting posts where the CRT is held onto, so these are a lot less prone to cracking.
Anyways, what I'm trying to point out here is that before you go out and blame the seller or the shipping company for any damage, perhaps it might also be worthwhile to consider how fragile the plastics on some of these monitors have become... and that it's inevitable that you'll get cracks - regardless if by shipping or from before that. Of course, if the monitor was packaged very poorly, then that's probably the reason it cracked and I would blame the seller for the damage. But if it was packed well otherwise, not much you can really do here.
If the monitor works fine, DON'T return it - especially if that involves shipping back again. Very likely it will get further damaged or possibly even destroyed.
Best course of action would be to fully take it apart and apply a hefty dose of PVC glue over all of the cracked parts (on the inside of the monitor, as PVC glue does yellow quite a bit under sunlight.) I did that to both my 15" Dell and HP, and so far they are holding up OK. Well, on the HP, the plastic is getting so brittle, that it's starting to crack in other places now (but not at the places where I glued it 🤣 ).
