Artwork: Hakkaku Hashiru Matsu (Octagonal Running Pine) - Superb Oil Smoke Ink - Artwork. - Design: Octagonal shape, pine carving - Manufacturing Year: Unknown (Old) - Material: Oil smoke ink - Characters: Seal of Kobaien and Kanji characters engraved This item was purchased 30 years ago for 50,000 yen and is from my calligrapher mother's collection. For those who appreciate its value, thank you very much. Thank you for viewing.