Thank you for viewing. This is a discontinued Astrox 77, 3U. I've used it for quite a while, so there are some scratches. The area shown in the last photo has a large scratch, but it's unclear if it's a crack. I was using it until recently, and there were no particular problems. Please feel free to ask any questions. I'm also open to price negotiations, and I'll consider a small discount. First come, first served! Returns and refunds are not accepted after purchase. I can add more photos of any areas of concern, so please check them before purchasing.