ClockSavant Watch Collecting, Servicing, & Repair Blog

Considerations in Servicing the Valjoux 72C (Valjoux 72)

by Eric Greenberg

The Valjoux calibre 72 (72C) represented a major milestone in the development of complicated wristwatch-sized chronographs. It had an extraordinari...

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Servicing a Movado Kingmatic Calibre 531 from approximately 1960

by Eric Greenberg

I recently serviced this beautiful Movado Kingmatic Calibre 531 from approximately 1960 for one of our regular customers. I especially like the age...

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What cheap watch servicing can get you

by Eric Greenberg

Here’s an example of what cheap watch servicing can get you. In this case a mangled hairspring, the specialty of the botch watchmaker. All day long...

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Watch running too fast? Overbanking and knocking

by Eric Greenberg

Continuous overbanking, or knocking, occurs on a watch when when the watch’s balance wheel swing (amplitude) is too large. The watch’s escapement r...

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Servicing the 1973 Omega 1310 Megaquartz - Omega's first in-house quartz movement

by Eric Greenberg

It’s been my experience that once a new collector “gets the bug” for mechanical watches, soon they lose all interest in quartz watches. However, e...

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The Depthing Tool - How deep is your watchmaker’s investment?

by Eric Greenberg

This is known as a depthing tool, this large version is used for clock restoration. and an identical but smaller version used for watch restoration...

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Watch Escapement Meters - Fine-tuning the escapement and pallet

by Eric Greenberg

Watch escapement meters are used to adjust, in a methodical and measured fashion, watch pallet stone depth while the shellac holding the stones i...

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Omega 321 and Lemania 27ch Servicing - Resolving the Lazy Hour Register

by Eric Greenberg

The Omega 321 and Lemania 27ch can suffer from a problem known as “lazy hour” wherein the hour register increments somewhat, or a lot, even if the ...