Charcoal Grill, Ceramic, Cylindrical

This is a handmade Mikawa black shichirin (charcoal grill) crafted by Kazunori Sugiura.
I bought it a few years ago, inspired by the internet, to grill saury, but the price of saury increased right after purchase, so I kept it stored without ever grilling any.
Initially, I tried cooking azuki beans, but lighting charcoal was a hassle, so I ended up storing it in my closet.
I'm listing it now because my closet is getting cramped after spring cleaning.

Dimensions: Top diameter approx. 29 cm, height 25 cm.
It has air vents for heat control.

Reference (from the homepage):

Mikawa black shichirin, made with the same manufacturing method since its establishment.
A product with a calm elegance, excellent heat resistance, durability, and thermal efficiency.
It features a double-layer structure combining an outer shell made of Mikawa clay and an inner core for charcoal made of diatomaceous earth.
This double-layer construction creates an air layer in between, providing outstanding insulation and heat retention.
It is also economical as it requires about 30% less charcoal.
Mikawa clay is resistant to moisture and impact, and also reinforces the diatomaceous earth.
Compared to shichirin made solely of diatomaceous earth, it is heavier, more stable, and durable for long-term use.
The air vents do not use metal, so they are resistant to rust.
Thank you for looking.