- Material: Iron
- Type: Mokko Gata
- Pattern: Representation of the Arimabayashi bridge under a 1st quarter moon sky, bridge located south of Shikoku, in the city of Kochi.
- Certificate: NBTHK - No. 755, dated 1967 and signed by President Hosokawa
- Classification: Tokubetsu Kicho
- Period: Edo (18th century)
- Weight: 129gr
- Dimensions: Diameter: 7.8cm x 8.45cm - Thickness : 3.3cm
- In its original Kiri box