Konnichiwa ClareBk-san! Majestic-san!
First of all, I apologize for not being of any help to you regarding Chinese poetry.
Pottery made from clay from
Hill 203 is known as 二〇三高地焼(203Kouchi-Yaki), 二〇三地焼(203Chi-Yaki), 烏城焼(Ujo-Yaki) or 旅順焼(Ryojun-Yaki).
The tall cup is a teacup "湯呑:Yunomi". Yunomi is used to drink hot water or hot green tea.
I can't read the poem, sorry.
二百三高地之土作之 烏城当人 : Made of clay from Hill 203 by Ujo himself
I can't read the letter "当人:himself" well, maybe I'm wrong.
The small cup is a sake cup "盃:Sakazuki".
I can't read the poem, sorry.
The stamp on the box indicates the manufacturer.
以二百三高地 : from Hill 203
之土作之 : Made of clay
旅順 : Port Arthur(place name)
白玉山書房 : Workshop name
渡邉烏城 : Potter name
白玉山 is the name of a mountain in Port Arthur. I think it represents the location of the potter. By the way, the official name of 203 Hill is "松樹山:Shouju-san" in Japan.
書房 means Calligraphy Workshop. 渡邉烏城 is originally a calligrapher.
The central letter "𥾏岡" is not currently used in Japan and its meaning is unknown.
"烏城" is also another name for
Okayama Castle. 渡邉烏城 is originally from
Okayama, and his name is probably taken from Okayama Castle.
The lords of Okayama are the
Ikeda clan, whose family crest is a butterfly. The insect depicted around the outside of the stamp is a butterfly. I think the other thing on the outside of the stamp is a bird maybe. But I'm not sure.
"烏城" means "crow castle" in literal translation. Because Okayama Castle is the black castle. Maybe the bird on the stamp is a crow. But to be honest, it looks like a peacock to me...
General Nogi was also famous as a poet. 二〇三高地焼 quotes Nogi's poem in whole or in part. However, I am not familiar with Chinese poetry, so I don't know if the poem on the pottery are by Nogi.
You probably already know this, but I'll mention it just in case. 二〇三高地焼 is neither a military product nor a government product. It's purely a souvenir.
The Russo-Japanese War ended in 1905, and 烏城 began making pottery in 1907. Pottery made from clay from Hill 203 was purchased by Japanese tourists and bereaved families visiting to pay their respects.
NANGI