This is a fine porcelain suite of Jingdezhen.
The gaiwan measures at 140mL and plate diameter at 6.125 inches.
Inscription:
山泉煎茶有怀
白居易 〔唐代〕
坐酌泠泠水，看煎瑟瑟尘。
无由持一碗，寄与爱茶人。
Thoughts on Boiling Tea with Mountain Springs by Tang Dynasty By Bai Juyi
I sit, boiling the clean and cold water,
And I enjoy making the ground green tea.
I fill a cup, without any reason,
To present it to th' tea-lovers and thee.