Mid-20th-century style wooden rolling office chair base and frame

This item appears to be the underside and base of a vintage-style rolling office chair, shown inverted on a concrete floor. The base is constructed from wood with a four-point star design, supported by small metal and white plastic or ceramic casters. The underside of the seat shows a wooden panel with partially legible black stenciled text, which includes fragments such as '71', 'BIR', 'TYI', 'FP', '202-3', '2C0', 'AL F', '0 G-S', and 'RN. UPH'. This text is consistent with manufacturing or inventory stamps often found on mid-20th-century American office furniture. The seat frame is supported by a metal tilting mechanism and a central threaded post for height adjustment. The edges of the seat are upholstered in a brown material, possibly vinyl or leather, which appears to be secured with staples. Condition-wise, the wooden base shows significant scuffing and finish loss particularly at the ends of the legs. The metal components show signs of surface oxidation. Hedged language is used as the specific manufacturer cannot be identified with certainty from the fragment of the stencil, and the piece is currently in a state of disassembly or repair.

Based on my examination of the provided image, this item appears to be the base and underside of a mid-20th-century rolling office chair. I can observe a four-point wooden star base and a mechanical tilting mechanism with a threaded post. The underside bears stenciled markings that may be manufacturing stamps, though I cannot verify a specific maker from these fragments without further research or physical inspection. From what I can see, the wood shows significant surface wear, scuffs, and finish loss, while the metal components exhibit signs of oxidation. The piece is currently in a state of disassembly or repair, which significantly impacts its immediate marketability. My value estimate of $75 to $150 is based on the assumption that this is a mid-century American-made component intended for restoration. The value of such items is driven by the demand for vintage office furniture parts and 'industrial' restoration projects. I cannot determine the structural integrity of the metal spring or the smoothness of the casters from a photo alone; a physical inspection would be required to ensure the mechanical parts are functional. If this item were found to be a more modern reproduction 'in the style of' mid-century furniture, the value would likely drop to the $30-$50 range. Conversely, if an in-person examination and provenance documentation linked this to a specific high-tier designer or manufacturer, the value could increase. To confirm the origin and potential for a higher valuation, I recommend a professional in-person assessment of the hardware and any hidden maker's marks.