Overview
This is a classic mid-century torsion pendulum clock, commonly known as an anniversary clock, housed under a protective glass dome.
Identification
Kieninger & Obergfell Kundo Anniversary Glass Dome Clock
Photo reference
1 uploaded photo
Story
Manufactured by Kieninger & Obergfell in St. Georgen, located in the Black Forest region of West Germany—an area historically renowned for its clockmaking industry. The 'Kundo' brand became synonymous with the 400-day or 'anniversary' clock in the mid-20th century, celebrated for its ability to run an entire year on a single winding. Anniversary clocks (torsion pendulum clocks) were extremely popular mid-century wedding and anniversary gifts, resulting in a highly saturated secondary market today.
Maker / Origin
Unattributed
Condition & Value
The clock features its signature glass dome and brass frame. For this specific model, the primary condition factors that dictate value are the integrity of the delicate suspension spring (which frequently breaks during moves), the presence of the winding key, and the cosmetic state of the brass (tarnish, spotting, or pitting).
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Sold comps, value drivers, and venue guidance pulled from recent auction results.
Market Analysis
Anniversary clocks (torsion pendulum clocks) were extremely popular mid-century wedding and anniversary gifts, resulting in a highly saturated secondary market today. They are relatively slow movers unless they are in pristine, working condition. Buyers are typically vintage decor enthusiasts or casual collectors looking for functional statement pieces, heavily favoring units that do not require expensive servicing or replacement parts.
Value Drivers
▲ Original glass dome intact, which is frequently lost or broken on vintage models.
▲ Recognizable Kundo maker mark from the highly regarded West German Black Forest clockmaking region.
▲ Classic mid-century aesthetic with a dark dial and brass four-ball pendulum appeals to vintage decor buyers.
Concerns
▼ Unverified working condition — non-running clocks or those with broken suspension springs drop into the $35-$50 repair-market tier.
▼ Unverified presence of the winding key — missing keys require buyers to source replacements, discounting the value.
▼ Potential brass tarnish or pitting — heavily oxidized frames sell at a discount compared to polished examples.
Best Venue
List on a broad secondary marketplace like eBay or Etsy, where vintage decor buyers actively shop. Before listing, verify if the clock ticks, if the pendulum rotates freely, and if the key is present; mention these details explicitly in the title and description. If the key is missing or the clock is untested, price toward the $40-$50 mark for a faster sale.
Upside Potential
If the clock is confirmed to be in fully working condition, keeping accurate time, includes the original winding key, and the brass is free of pitting, it can confidently realize the $100 high-end. There is little realistic upside above $125 for standard mid-century Kundo models due to high market supply.