AI Appraisal Estimate

This is a commemorative circular presentation plate or dish issued in 1971 to celebrate the fiftieth anniversary of the New York Building Congress. The item is constructed of a heavy, non-reflective metal, likely pewter or a similar brushed alloy, featuring a wide, shallow slanting rim. At the center is a raised, circular bronze-toned medallion or cast insert. The central design features the year '1971' in raised block numerals, encircled by the text 'NEW YORK BUILDING CONGRESS FIFTIETH ANNIVERSARY' in capitalized sans-serif lettering against a textured, dark patinated background. Physically, the plate shows a soft, satin-finished silver tone on the outer body with visible surface character including minor scratches, light scuffing, and small spots of oxidation or tarnish consistent with its 50-plus-year age. A subtle maker's mark or hallmark is visible etched into the metal just above the central medallion, though it is partially obscured by reflections. The craftsmanship reflects a mid-century industrial commemorative style, prioritizing durability and a professional aesthetic suitable for an organization representing the New York City construction and design industry. The condition is overall good but shows signs of handling and storage typical for vintage memorabilia.

I have virtually examined the 1971 New York Building Congress Fiftieth Anniversary commemorative plate. The item appears to be an authentic example of corporate awards produced during the early 1970s, characterized by the use of brushed pewter or a similar heavy-base alloy with an inset bronze-patinated medallion. The physical condition is 'Good to Very Good' for its age; while the central medallion remains crisp with legible relief, the surrounding pewter rim shows expected surface abrasions, minor scuffing, and localized oxidation consistent with air exposure and handling over five decades. From a market perspective, this item falls under the category of local institutional memorabilia. Its primary value is derived from its connection to the New York City construction and architectural industry rather than the intrinsic value of its materials. Comparables for similar mid-century organizational commemorative plates typically range between $30 and $90. Rarity is moderate; while these were produced in limited runs for members or gala attendees, there is a niche collector base specifically for New York City history and industrial artifacts. Factors impacting value include the lack of original presentation packaging and the visible surface wear. Limitations of this virtual appraisal include the inability to confirm the precise metal composition through weight or chemical testing, and the obscured maker’s mark which prevents identifying the specific foundry. A full authentication would require a physical inspection to verify the hallmark, a lead-test on the pewter alloy, and provenance documentation, such as the original recipient's name or accompanying literature, to potentially elevate it toward the top of the price range.