Round disc glass vase (not authenticated)

This physical item is a large, circular, flattened glass vase or decorative vessel displaying a clear, transparent glass composition. The object features a compressed disc shape with a narrow profile, a rounded perimeter, and a small opening or neck located at the top edge for holding stems or botanical displays. The glass appears smooth and polished, reflecting its environment, and is currently supported upright on a small white display stand resting on a tan or beige fabric-covered surface. There are no clearly visible maker's marks, signatures, or stamps directly readable in the photograph to confirm the production origin. The overall aesthetic is consistent with mid-century modern or contemporary decorative art glass design characterized by minimalist geometry and fluid forms. The visible condition appears generally intact with no obvious major fractures or cracks apparent from this viewing angle, though minor surface wear or patina cannot be ruled out without closer physical inspection. The attribution in the name rests purely on visual observation of the form rather than an authenticated hallmark. Furthermore, the owner's supplied attribution suggesting this is a Jan Philippi 10-inch round disc glass vase is an unverified claim that has not been authenticated by physical examination or direct documentary evidence.

Based on what I can see in the provided image, this large, circular, flattened glass vase exhibits a minimalist mid-century modern or contemporary aesthetic with a clear, transparent composition and a compressed disc shape. Per user submission, the owner identifies this as a Jan Philippi 10-inch round disc glass vase. However, I cannot verify from a photo whether this attribution is correct, as no maker's marks, signatures, or stamps are clearly visible or legible to confirm the production origin. Therefore, the estimate provided assumes the owner's unverified claim is correct for the sake of this evaluation. In current secondary markets, decorative art glass of this scale and style typically trades within a moderate range when associated with known designers or makers. If the attribution to Jan Philippi is correct, the estimated market value for an item of this type is $150 to $300, depending on precise dimensions and condition. Would need physical inspection to confirm the quality of the glasswork, look for faint or hidden signatures, and check for hidden scratches or chips. If the piece is ultimately determined to be an unsigned reproduction, a generic contemporary copy, or simply 'in the style of' rather than a primary work, the value would likely decrease significantly, dropping closer to $40 to $80 as a generic decorative accessory. To establish a stronger valuation and support any potential claims of authorship, an in-person expert appraisal, direct documentary evidence, or professional provenance verification would be required.