Q: I inherited my grandmother’s set of china. The dishes are decorated with red and yellow roses. Each one has an octagonal mark with “Semi W.M. Co. Porcelain” inside it. Can you tell me who made this china and how old it is?
To read this article — and over 25,000 more — try Kovels Membership FREE for 7 Days
Kovels Knowledge Members get full access to 25,000 articles on antiques and collectibles from 60 years of publication.