Kyo ware tea bowl made about 50 years ago in high quality Kyoto Seiwa kiln

Kyo ware tea bowl made about 50 high quality years ago in Kyoto area.
The mark Seiwa is stamped on the bottom.

Kyo/Kiyomizu Ware has several centuries of history with over 300 kilns located around Kyoto, Japan.
The history of Kiyomizu pottery goes back to the Momoyama period (1568-1600).

Size
5.5cm high;
14.5cm diameter;
530g total weight.

Excellent condition.
No cracks. No chips.
Supplied with wooden box for protection.