A leading expert in cloisonne authenticated that this tray is an unsigned piece by Namikawa Sosuke and, even more remarkably, a photographic example of a similar tray that is based on the same artwork by the artist Watanabe Seitei. Most specialists will confidently attribute this tray to the Tokyo branch of Shippo Gaisha, managed by Namikawa Sosuke. We initially cleaned and bleached the cracks, taking care not to damage the patina of the metalwork. We bent the rim back into shape ...