Boleslawiec-style Polish stoneware vessel

This item appears to be a ceramic vessel, likely a bowl or jar based on the circular foot, featuring cobalt blue hand-stamped patterns consistent with the Boleslawiec peacock or feather motif. The underside of the piece displays several hand-applied marks and stamps. Visible text includes 'UNIKAT-745' and 'TERESA ANDRUKIEWICZ', which is consistent with the name of a known Polish stoneware artist. The base also features a manufacturer's stamp depicting a stylized castle or gate above '64', as well as the text 'HAND MADE IN POLAND' and handwritten initials 'TA-64'. The owner identifies this as being signed by a Polish artist, which is supported by the visible markings, though such marks are unverified as authentic without physical inspection. The glaze appears creamy white on the base with characteristic blue stippling on the exterior. Condition shows slight shelf wear and darkening on the unglazed foot rim. Stylistically, this piece is consistent with contemporary or late 20th-century Boleslawiec pottery, though the exact age is unconfirmed. 'Unikat' suggests a unique or limited production pattern within this ceramic tradition.

Based on the provided imagery, I have examined this stoneware vessel which bears markings and a signature 'Teresa Andrukiewicz' alongside the designation 'UNIKAT-745.' While I cannot verify these marks as authentic through a photograph, the piece appears to be a high-quality example of Boleslawiec pottery. The 'Unikat' (Unique) designation suggests a more intricate pattern hand-painted by a recognized artist rather than a standard factory pattern, which typically elevates the piece's desirability. The blue peacock eye motif and cream-colored glaze appear consistent with contemporary Polish ceramic traditions. From what I can see, the condition shows minor shelf wear on the foot rim, which is expected for handled ceramics. My estimate assumes the attribution provided by the owner is correct; however, current market value for Unikat pieces depends heavily on the name of the decorator. Comparable vessels attributed to established Boleslawiec artists generally inhabit this price range. Without a physical inspection to confirm the weight, glaze quality, and the legitimacy of the artist's mark, this remains a working hypothesis. If the piece were found to be a standard factory production or a lesser-known artist's work, the value would likely decrease to the $30-$50 range. To confirm the origin and authorship, an in-person examination by a specialist in Eastern European ceramics or documented provenance would be required.