Absolutely luv this set. It does look like one mug was previously used and had stains and stress fractures in the base. Which none of the others did. I’ll be contacting the company regarding it but all in all it’s a beautiful set. Sturdy and heavy duty. UPDATE  bought this set in August. While it’s a lovely set and feels sturdy I’ve also lost 2 bowls and 2 plates. They’ve cracked down the center plus a mug. It’s just my husband and I. And we hand wash everything. Highly disappointed.