by Shogyokuen Seicha祥玉園製茶
A top-grade koicha in the iemoto line, listed as 'Gokujo' and favored by Urasenke Konnichian headmaster Hounsai Daisosho. The official shop offers 40g and 100g tins.

Editorial verdict
Seisho-no-Mukashi reads as one of the most formal and prestige-loaded matcha entries in the catalog, intended for koicha service and tea-school aligned buyers.
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Other blends from Uji
祥玉園製茶オンラインショップ 御家元抹茶 清祥の昔 — 祥玉園製茶株式会社
Supports: Official shop lists 濃茶 極上 清祥の昔 at ¥7,560 per 40g and identifies it as a koicha favored by Urasenke Konnichian headmaster Hounsai Daisosho.
About the brand
祥玉園製茶
Kyoto-based Uji tea maker founded in 1827, with a business model the company describes as integrated from production through sales and a tea-specialist history spanning more than 180 years.
View all Shogyokuen Seicha blendsSeisho-no-Mukashi is sourced from Uji, Japan.
Seisho-no-Mukashi is priced at ¥7,560 for 40g (¥189/g).
Seisho-no-Mukashi is recommended for koicha. Thick tea — a concentrated preparation using about 4g of powder and 30ml of water, reserved for the highest-grade matcha.
You can buy Shogyokuen Seicha Seisho-no-Mukashi directly from Shogyokuen Seicha's official website.