Wilton Columbia pewter bowl. It's a beautiful pewter bowl, shaped like a seashell... like ripples... It's called a scalloped pewter bowl. Diameter: Approximately 18 cm Bottom diameter: 11 cm Height: 6 cm (approximate) I bought it in Canada about 20 years ago. It has been stored at home, so there are some dullness and stains. I don't know how to polish it, so I only washed it with water. Please understand the above before purchasing.