AI Appraisal Estimate

This item is a spherical art glass vase, commonly referred to as a rose bowl or 'thick-walled' centerpiece bowl. Constructed from heavy, clear lead crystal or high-quality flint glass, it features a distinctive 1/4 inch thick smooth-ground and polished rim. The most striking decorative element is the deep, semi-translucent frosted etching that wraps around the perimeter. The design consists of overlapping, stylized arching swaths or 'ribbons' that create a sense of dynamic movement. These frosted sections are deeply cut into the surface of the glass, creating a multi-dimensional effect where light interacts with both the polished clear surfaces and the matte-finished intaglio cuts. The quality of the glass indicates a high lead content, providing excellent clarity and significant weight for its size. Based on the geometric yet organic wave pattern, this piece is likely of Scandinavian (possibly Orrefors or Kosta Boda) or European (such as Rosenthal) origin, dating from the mid-to-late 20th century, circa 1960-1980. The craftsmanship is evident in the precision of the polishing and the uniformity of the frosted texture. The condition appears excellent with no visible chips, flea bites, or significant clouding, though some minor shelf wear (light scratches) is expected on the base. No visible signatures are apparent in the photo, though a faint acid-etched mark may be present on the bottom surface.

I have carefully examined the high-resolution images of this Mid-Century Modern frosted and polished art glass rose bowl. The piece exhibits characteristics consistent with high-quality European production from the 1960s or 1970s, specifically reminiscent of the Vicke Lindstrand era at Kosta Boda or the 'Duo' series by Rosenthal. The 1/4 inch thick ground rim and the precision of the intaglio-cut frosted ribbons suggest a high level of craftsmanship and lead content. The condition appears to be excellent; the lack of visible flea bites or interior clouding (often caused by hard water) preserves the clarity essential for the piece's value. The current market for mid-level Scandinavian and European art glass remains stable, though unsigned pieces command lower prices than those with verifiable signatures such as Orrefors. Similar heavy-walled cut crystal bowls of this size and era typically hammer at auction or retail in the $150 to $250 range. The value is driven primarily by its aesthetic appeal and the 'Mid-Century Modern' design trend rather than extreme rarity. Limitations: Without physical inspection, I cannot confirm the presence of a faint acid-etched signature or evaluate the depth of shelf wear on the base, which can distinguish a modern reproduction from an authentic period piece. Full authentication would require an in-person examination under a loupe and blacklight to check for repairs or fluorescence consistent with period lead crystal. Provenance or original labeling would also solidify its origin and potentially increase the valuation toward the higher end of the spectrum.