Vintage Karolina Fine Porcelain Plate/Vessel Base

This item is the base of a ceramic vessel, likely a plate, saucer, or bowl, crafted from fine white porcelain. The material exhibits a smooth, bright white, high-glaze finish characteristic of European domestic porcelain. Central to the base is a clear green backstamp featuring a crown motif over the word 'Karolina', with 'MADE IN POLAND' printed directly beneath it. This mark identifies the Jaworzyna Śląska porcelain factory, which has a long history in Polish ceramic production. To the left of the central logo, there is a hand-applied metallic gold Arabic numeral '25', likely representing a pattern number or a specific decorator's code. Below the central mark is a small, stamped numeral '3', possibly indicating a mold number or production line. The porcelain appears to be in very good condition with a clean, unblemished foot ring and no visible chips, cracks, or crazing. The craftsmanship is indicated by the crispness of the porcelain body and the professional application of the factory marks, suggesting a mid-to-late 20th-century manufacture date, typically associated with export-quality Polish tableware.