Shibata Japan Porcelain Base with Maker's Mark

This item is the base of a white porcelain object, likely a vase, cup, or similar ceramic vessel, manufactured by Shibata in Japan. The overall color is a clean, bright white, indicative of fine porcelain. The base is circular and features a distinct red square maker's mark prominently centered on its bottom surface. Within this red square are intricate Japanese characters, suggesting a traditional or established brand identity. Below the red square, centered, are the stenciled words 'SHIBATA' in capital letters, followed by 'JAPAN' in smaller capital letters directly beneath it. The rim of the base, which is the part that would make contact with a surface, shows some noticeable wear and discoloration. There are several dark brown, almost black, smudges and specks around the outer edge of the base rim, indicating dirt accumulation, surface abrasion, or possibly small chips/roughness from age and handling. This wear pattern is consistent with an item that has been used or displayed over time. The craftsmanship appears to be of good quality, with a smooth, glazed finish on the main white surface, contrasting with the slightly rougher, unglazed or worn nature of the very bottom edge. The style points towards a post-WWII or mid-20th century production given the clear 'MADE IN JAPAN' type mark (though here it's just 'JAPAN' below the name). The clarity of the mark suggests a commercial production, likely for export. The visible condition issues are mostly confined to the base rim, which is common for such items.