Mid-century modern style enameled ceramic or cast iron bowl

This item appears to be a large cylindrical bowl featuring a distinctive vertically ribbed or fluted exterior. The exterior surface is finished in a glossy olive green glaze, while the interior is a contrasting smooth, bright white. Based on the thick walls and high-gloss finish, the construction is stylistically consistent with enameled cast iron or heavy high-fire ceramic cookware popular in the mid-to-late 20th century. The rim is slightly rounded and integrated into the body. No maker's marks or stamps are visible in this view, although the owner identifies the item as being by Michael Lax for Copco; this specific user-supplied attribution remains unverified without physical inspection of the base for marks such as 'Copco' or 'Denmark'. The design is highly consistent with minimalist Scandinavian-inspired kitchenware of the 1960s or 1970s. The surface shows light reflections suggesting it is in good cosmetic condition, though slight grazing or minor finish wear might be present upon closer inspection. The overall aesthetic is functionalist with a focus on geometric form and textural contrast.

I have examined the provided image of a cylindrical, vertically ribbed bowl with an olive green exterior and white interior. Per the user's report, the piece is attributed to Michael Lax for Copco. Based on what I can see, the design is highly characteristic of mid-century minimalist kitchenware, though without viewing the base for stamps or hallmarks, I cannot confirm this attribution. I cannot determine from a photo if the material is enameled cast iron or high-fire ceramic, nor can I verify the presence of minor chips or crazing invisible at this resolution. The estimate of $60 to $125 assumes the user-supplied attribution is correct and the item is in good vintage condition. In the current secondary market, there is steady demand for functionalist Scandinavian-style cookware; however, if the piece is found to be an unattributed 'in the style of' reproduction rather than a branded Copco item, the value would likely decrease to the $20 to $40 range. To establish a more precise valuation, a physical inspection is required to check for 'Copco' or 'Denmark' markings on the underside and to assess the integrity of the enamel. Authentication would depend on finding these marks or matching the specific dimensions and weight to known production records from the 1960s-70s.