| No. | 26 |
| Description | Okhotsk pottery |
| Site | Tokoro-chashi Site: doneted material |
| Size (cm) | H. 20 |
| Period | Late stage of Okhotsk culture |
| Date | 8-9th century |
| Possessor | Tokoro Research Laboratory |
| Comment | Chinsen-mon (incised line) series pottery from the late stage of the Okhotsk culture. Chinsen-mon series pottery is relatively early compared to the Haritsuke-mon (appliqué decoration) series, and spread around northern Hokkaido, influencing pottery-making tradition in eastern Hokkaido. |