Krosno Cobalt Blue Controlled Bubble Pilsner Glasses
Decorative art, mouth-blown glassware • Krosno Glass S.A. (Poland)
Style & Movement
Mid-Century Modern / Post-Modernist Functionalism
Medium & Technique
Cobalt blue glass and clear glass; mouth-blown with controlled bubble (bullicante) technique in the weighted base.
Creation Period
Late 20th Century (circa 1980-1995)
Dimensions & Format
Approximately 7 to 8 inches in height; vertical pilsner format with a weighted pedestal base.
Subject Description
A set of tall pilsner or iced-tea glasses featuring a deep cobalt blue vessel joined to a heavy, clear solid glass base containing a single, centered controlled air bubble acting as a focal point.
Condition & Value Assessment
Condition Assessment
Excellent; no visible chips, cracks, or clouding (sickness) apparent in the image.
Estimated Market Value
$60.00 - $120.00 USD (for a set of four to six)
Auction Estimate
$40.00 - $80.00 USD
Provenance History
Produced in Poland by the Krosno glassworks; likely acquired through high-end department stores or specialty imports in North America or Europe.
Art Historical Significance
Krosno is a premier Polish glassmaker established in 1923, known for bridging the gap between mass production and artisanal hand-blown techniques; this design is emblematic of the 'Polish School' of glass design which emphasizes clean lines and geometric integrity.
Notable Features
Distinctive large single 'controlled bubble' in the sham (base), seamless transition between cobalt and clear glass sections, and high refractive quality characteristic of Krosno lead-free crystalline.
Condition Issues
None visible; potential for light surface scratches on the underside from tabletop contact.
Conservation Recommendations
Hand wash only with mild detergent; avoid mechanical dishwashers to prevent glass clouding and thermal shock; display away from shelf edges.
Collector Notes
Krosno