Porcelain cup in the style of Karolinka by Jaworzyna Śląska

This item is a white ceramic cup, likely porcelain, featuring a cylindrical body and a small handle visible where a hand is holding the object. The glaze appears bright white with a high-gloss finish. On the underside of the base, there is a visible green underglaze factory mark consisting of a crown symbol above a stylized word that appears to read 'Karolinka', followed by the text 'MADE IN POLAND' and a numerical digit '2'. There is also a small reddish smudged mark adjacent to the factory stamp. The construction is consistent with mass-produced mid-to-late 20th-century European tableware. The piece shows signs of light use; however, no significant cracks, chips, or pervasive crazing are immediately apparent from the angle provided. The rim of the cup appears to have a thin metallic or dark band, possibly gilt, though lighting makes this difficult to examine. This identification is based on the legible stamp, though such marks can be subject to replication or misinterpretation without a physical inspection. The design is stylistically consistent with post-WWII Polish ceramic production from the Jaworzyna Śląska region.

Based on the provided image, I have examined this white porcelain cup which bears a mark suggesting it may be a product of the Jaworzyna Śląska factory in Poland under the 'Karolinka' line. The green underglaze factory mark and the 'MADE IN POLAND' text are consistent with mass-produced tableware from the mid-to-late 20th century. Based on what I can see, the cup appears to be in good utilitarian condition, although I cannot verify the presence of fine hairline cracks or the exact state of the rim's gilding without a physical inspection. This value estimate is based on the assumption that the piece is a genuine example of Polish export porcelain from this era. Market demand for individual pieces of this specific vintage tableware is generally modest, often appealing to collectors of regional European ceramics or those looking to complete existing sets. If this piece were found to be a more modern reproduction or a less desirable imitation, its value would likely drop to a nominal decorative level of under $5. To confirm the origin and age of the piece, an in-person examination by a specialist in Eastern European ceramics would be necessary to verify the glaze composition and the specific application of the factory stamp. For a higher valuation, provenance documentation or a complete service set would typically be required, as single cups of this type are common in the secondary market.