It has a tiny mark.  I have not attempted to clean it.  Please see the photos.

Other than that, the duvet is in excellent condition. The Pottery Barn Darien Full/Queen Duvet in Pink Yellow Buffalo Plaid is a stylish and versatile bedding option for a kid's bedroom. Made from 100% cotton, this duvet cover is both soft and durable. The pink and yellow buffalo plaid pattern adds a fun and playful touch to the room, and the reversible design offers flexibility in creating different looks. The set includes the duvet cover only, making it easy to mix and match with other bedding pieces to create a personalized and cozy bedroom atmosphere. Perfect for adding a pop of color and pattern to any kid's room.