| No. | 21 |
| Description | Kohoku C2-D type pottery |
| Site | Tokoro-chashi Site: from Pit Grave ⅩⅥ-18b |
| Size (cm) | H. 22.8 |
| Period | Late Epi-Jomon |
| Date | 3rd-4th century |
| Possessor | Tokoro Research Laboratory |
| Comment | Kohoku C2-D type pottery has geometric designs of cord-markings, which are surrounded by slender clay ridges and dotted lines. The rim ornamentation of this sample is formed by a design that features a combination of circular arcs as a main pattern, and lines that connect them as a sub-pattern. |