Art-deco style oversized glass vessel with cobalt blue knop

This item appears to be an oversized glass vessel, stylistically consistent with decorative martini-style barware or centerpiece stemware from the late 20th century. The piece features a wide, conical clear glass bowl that transitions into a stem accented by a double-stacked cobalt blue knop or bead. These blue elements appear to be fused glass, providing a bold geometric contrast to the clear components. The stem tapers down to a wide, circular clear glass foot, which provides stability for the large upper proportions. The construction appears to be hand-blown or mold-blown glass based on the organic curves of the knops. There is a small white sticker visible on the interior of the bowl, but the text is not legible from the image provided. There are no visible maker's marks, etched signatures, or brand labels directly readable on the surface, making a specific attribution to a glass studio or designer unverified. The overall aesthetic is consistent with modern art glass designs of the 1980s or 1990s. The glass appears to be in good condition with no visible chips or cracks at this resolution, though physical inspection would be required to rule out minor surface abrasions or interior clouding. Identification is based on stylistic analysis of the color palette and form.

I have examined the provided image of the oversized glass vessel featuring a conical bowl and cobalt blue accents. Based on what I can see, the piece reflects a design vocabulary consistent with post-modern or Art Deco revival glasswork from the late 20th century. The double-stacked cobalt knops suggest a level of craft common in hand-blown studio glass, though I cannot verify the specific manufacturer or artist from a photo alone. My valuation assumes the piece is a quality example of mid-to-late century decorative art glass. If this item were to be associated with a recognized designer or studio, such as a notable Italian or Scandinavian maker, the market value could potentially trend higher. However, without a visible signature or documentation, I must treat the attribution as a hypothesis. I cannot verify the presence of acid-etched marks or subtle glass imperfections that would indicate a specific workshop. A physical inspection would be required to rule out surface scratches or internal clouding, which would significantly decrease desirability. In the current market, large-scale decorative barware and centerpieces of this aesthetic are popular for interior staging and contemporary collections. If this item were identified as a mass-produced replica or a contemporary 'in the style of' import, the value would likely fall below $50. To confirm the higher estimate, one would need to provide provenance documentation, locate an etched signature on the base, or undergo a specialized glass expert's review. The provided range represents the typical secondary market interest for unattributed studio glass of this scale and visual impact.