This is a Japanese tea bowl (chawan) made of high-fired stoneware, featuring a calm and well-balanced form with a softly rounded profile and subtle throwing lines visible beneath the glaze. The surface shows a restrained, natural glaze tone with gentle variation, characteristic of mid-20th-century Japanese tea ceramics influenced by traditional wabi-sabi aesthetics. The bowl is accompanied by its original tomobako (signed wooden storage box). The box bears handwritten ink inscription and a red seal, indicating the title of the work and attribution by the potter or a related authority. While the exact artist name is not conclusively identified, the presence of original calligraphy and seal suggests the piece was made for the tea ceremony context and properly presented at the time of creation. The foot is neatly finished, showing clear traces of wheel work and firing marks consistent with Japanese studio pottery of the Showa period. No visible cracks or restorations are observed; the condition is good, with natural kiln effects and age-appropriate patina. This tea bowl would be suitable both for practical use in chanoyu and as a collectible example of Japanese ceramic art from the Showa era, especially appealing to collectors who value authentic presentation with original wooden box and inscription. Dimensions (approximate): – Diameter: about 11.5–12 cm – Height: about 6–6.5 cm A refined and honest example of Japanese tea ware, offering aesthetic restraint, tactile warmth, and cultural context.