Four vintage Munising bowls from Michigan have irregularities in diameter that run between 6 and 7in. Some of the bowls are oval, some are more round. Each bowl has Munising stamped or burned into the bottom.  Originally, each bowl had a pinecone painted on the inside, but they have mostly worn off, leaving untreated wood. There are spots where the finish on bowls has worn off, and one has a dark area on the bottom. They definitely need some work, but they are solid and unchipped.