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Close-up view of a vintage mechanical watch movement, reminiscent of the Vacheron Constantin K1120 caliber, with visible gears and engraved text, labeled OTTUHR.
Garrett Silverstein
24 Dec 2025
December 31, 2025

Vacheron Constantin K1120

The Vacheron Constantin caliber K1120 stands as the purest expression of the legendary JLC 920 ultra-thin automatic architecture. This ...
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Close-up of an intricate mechanical watch movement, labeled Zenith 156H, showcasing visible gears and finely crafted parts.
Garrett Silverstein
24 Dec 2025
December 31, 2025

Zenith 156H

The Zenith Caliber 156H represents the most sophisticated variant of the 15-ligne Martel-based chronograph family, distinguished by its...
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Close-up of a vintage Zenith mechanical watch movement, featuring the intricate 156d caliber with visible gears and "Zenith" engraved on a metal component.
Garrett Silverstein
24 Dec 2025
December 31, 2025

Zenith 156D

The Zenith Caliber 156D represents the two-register variant of the 15-ligne chronograph family developed by Martel and later produced u...
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Close-up of a vintage Zenith 156 watch movement with visible gears and intricate mechanical parts.
Garrett Silverstein
24 Dec 2025
December 31, 2025

Zenith 156

The Zenith Caliber 156 represents a significant chapter in mid-century Swiss chronograph manufacturing, embodying the engineering excel...
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Close-up of an intricate Zenith 146H mechanical watch movement with visible gears and components, labeled ZENITH and SWISS MADE.
Garrett Silverstein
24 Dec 2025
December 31, 2025

Zenith 146H

The Zenith caliber 146H represents a significant chapter in mid-century Swiss chronograph manufacturing, serving as the bridge between ...
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Close-up of a vintage Zenith mechanical watch movement, showcasing the intricate gears and precise metal components of its 146HP caliber.
Garrett Silverstein
24 Dec 2025
December 31, 2025

Zenith 146HP

The Zenith caliber 146HP represents an evolutionary refinement of the caliber 146H, incorporating technical improvements that enhanced ...
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Close-up of a Vacheron Constantin 1015 watch movement with exposed gears and engraved gold text.
Garrett Silverstein
24 Dec 2025
December 31, 2025

Vacheron Constantin 1015

The Cal. 1015 stands as Vacheron Constantin's quintessential ultra-thin manual-winding dress watch movement. Based on the Jaeger-LeCoul...
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Close-up of a Zenith 146DP mechanical watch movement, featuring golden gears and intricate metal parts.
Garrett Silverstein
24 Dec 2025
December 31, 2025

Zenith 146DP

The Cal. 146DP stands as one of the final masterworks of the manual-wind chronograph era, engineered decades before the El Primero revo...
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Close-up of a Vacheron Constantin mechanical watch movement, revealing intricate gears, cogs, and engraved text, with K1002 and OTTUHR at the bottom right.
Garrett Silverstein
24 Dec 2025
December 31, 2025

Vacheron Constantin K1002/2

The Vacheron Constantin K1002/2 stands among the most refined hand-wound dress watch movements ever produced in volume. This five-bridg...
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Close-up of a vintage watch movement with visible gears and screws, labeled “OTTUHR” in the corner—a design reminiscent of Universal Geneve’s famed 281 caliber.
Garrett Silverstein
24 Dec 2025
January 1, 2026

Universal Geneve 281

The Universal Genève Caliber 281 stands as one of the most significant chronograph movements of the mid-20th century, representing the ...
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