Item is new, never used, but preowned. Stamped on bottom with GRES O along with studio marks. All marks on bottom are light, not easy to identify. Hand thrown, made in Portugal No cracks, chips or scratches. The line on bottom is how the artist smoothed it. There are multiple small burrs inside dish. They are not chips, their height means the light glaze did not cover the whole burr. Dish can be used for baking or cooking to At a temperature as high as 400 degrees Fahrenheit for up to one hour. Can be refrigerated (if using for dip, but dish should not be frozen).