AI identification & appraisal estimate

Brass Torsion Pendulum Anniversary Clock under Glass Dome

This name is the AI's identification of the item — it may be incorrect.

Submitted photo of Brass Torsion Pendulum Anniversary Clock under Glass Dome
Photo submitted by the user — not generated by AI

AI Estimated Value

Not an official valuation

$40-80

AI estimate as of July 27, 2026 · verify with a professional before acting

AI-Generated · Verify before acting

Everything on this page is generated by AI for informational purposes only. AI can make mistakes — the AI may misidentify items or misattribute them (artist, maker, brand, designer, origin, era). This is not an official valuation and should not be used for insurance, sale, tax, estate, legal, or lending purposes — or any decision requiring a certified appraisal. It is not an authoritative claim about any person, brand, or rights holder — do not share or rely on it as a factual statement about a third party. Always consult qualified professionals before making financial decisions.

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AI Item Analysis

This object appears to be a traditional anniversary-style torsion pendulum clock, encased in a clear glass dome with a brass-tone circular base. The clock dial features a gold-toned metallic face with Roman numeral hour markers and ornate black decorative hands. In the center of the dial, there appears to be text that bears a reading similar to 'Concordia', which is consistent with brands that produced battery-operated or mechanical anniversary clocks in the late 20th century. Below the main dial structure sits a rotating, four-ball torsion pendulum mechanism supported by brass-finished pillars. The entire assembly appears to be in clean condition, showing light reflections and minimal visible tarnish on the metallic surfaces. The overall aesthetic is stylistically consistent with mid-to-late 20th-century decorative mantle clocks. Please note that physical testing and inspection by a professional horologist are required to confirm the precise maker, mechanical movement type, and operational status.

AI Appraisal Report

Based on what I can see from the image, this object appears to be a mid-to-late 20th-century torsion pendulum anniversary clock under a clear glass dome with a brass-toned base. The dial features Roman numerals and text reading similar to 'Concordia', a mark associated with decorative mantle clocks from this era. The rotating four-ball pendulum and metallic surfaces present in clean condition with minimal visible tarnish, though I cannot verify from a photo whether the movement is mechanical or battery-operated, nor if it is currently in working order. My value estimate of $40 to $80 assumes the clock is complete, functional, and consistent with standard Concordia-marked or similar German/Japanese mass-produced anniversary clocks of this period. Items of this style were widely produced as decorative home accents. General market demand for mid-century quartz or basic mechanical anniversary clocks remains modest, as collectors typically seek earlier or higher-precision horological pieces. To establish a precise identification and value, an in-person physical inspection by a qualified horologist would be needed to examine the rear movement, inspect for maker stamps or hallmarks, assess gear wear, and test timekeeping accuracy. If a physical inspection reveals that the internal movement is damaged, incomplete, or a lower-quality modern battery conversion rather than a functional mechanical assembly, the market value would likely drop to $15 to $30 as a purely decorative accent piece.

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