How Quartz Movements Keep Time

Quartz pic


Pocket watch collector Craig Duling is the expert behind Craig Duling’s website showcases his collection of rare and ornate watches and provides a wealth of information about the history and inner workings of various timepieces.

Timepieces that are based on pendulums or springs require winding to help them keep time. Winding is a form of stored energy, which gradually depletes through friction, air resistance, and other forces.

Quartz watches use a battery in place of a winding mechanism. A battery can store enough energy to run a timepiece well for years. In a quartz clock, the battery delivers energy to a small crystal. This crystal will always vibrate at a specific frequency: 32,768 times per second. An electronic circuit in the timepiece is able to count these vibrations, which allows it to generate a small electric pulse exactly once a second.

These repetitive electronic pulses keep time just like the escapements in a mechanical timepiece. They can be used to turn gears that move timepiece arms, or they can be used to power a small display in a digital timepiece.


Periodicals Published by the American Numismatic Association

American Numismatic Association (ANA)


Craig Duling is an antiquarian horologist that operates the website, an informational website that specializes in information related to rare timepieces. In addition, Craig Duling is active in charitable organizations, is an active member in the National Association of Watch and Clock Collectors, and is a lifetime member in the American Numismatic Association (ANA).

Founded in 1858, the American Numismatic Association (ANA) is a non-profit organization devoted to coins, currencies, and similar items. The organization, which is headquartered in Colorado Springs operates a pneumatic library and a collection of more than 800,000 items, which date to 650 BCE. In addition to these resources, the society operates a publication program.

The publication program of the American Numismatic Association (ANA) originated in 1866 and includes books, monographs, research, and periodicals. The organization’s periodical collection includes the American Journal of Numismatics, which is a peer-reviewed scholarly journal. In addition, the organization publishes the Colonial Newsletter, which focuses on coins from the colonial and confederation periods, and the ANA Magazine, which is a quarterly periodical for the society’s members.

Which Watches Have the Highest Value?


An avid watch collector in Atherton, California, Craig Duling runs the website. Through this online portal, Craig Duling provides his audience with information about some of the world’s rarest and most valuable watches.

The art of watch making has produced stunning timepieces that have attracted the eye of collectors across the globe. Some of the most impressive of these watches have sold for more than $1 million at prestigious auctions, making them the most expensive of their kind. Here are a few of the watches that have the highest net worth:

Vacheron Tour de l’Ile
Vacheron has been making watches for more than 250 years, the longest of any manufacturer. One of its most valuable pieces is the Tour de l’Ile, a watch that has two faces and numerous complications. Each of these features has contributed to its value of more than $1.2 million.

Patek Philippe Caliber 89
Worth $5.1 million, the Caliber 89 remains the single most complicated watch, with more than 30 complications. Even more impressively, the watch contains over 1,700 different components that combine to weigh in excess of two pounds. Patek Philippe staff spent a total of nine years researching and creating this unique timepiece.

Patek Philippe Supercomplication
Created on commission from Henry Graves Jr. in 1927, the Supercomplication was specifically designed to be the most complicated timepiece on Earth. The resulting pocket watch boasted 24 total complications, a golden frame, and two distinct faces. Eventually, the Supercomplication sold for $11 million in a Sotheby’s auction.