1910 18ct Gold and White Enamel Open-Face Pocket Watch
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An 18ct gold and white enamel open-face pocket watch circa 1910 4.5 cm dial diameter, 5.5 cm case diameter, 6.5 cm high. An 18ct gold and white enamel open-face pocket watch. Circa 1910. Gents 18 carat gold open face watch. Case engine-turned with a central shield surrounded by. a belt and buckle. Round gold bow, metal winding crown. The inside of the case bears the. marks "18C" and 0.755 in rectangular frames, and the word "Brevete", a cross and the. number 9407 all in an oval frame. It also bears the number 30855 near the winding stem, and. indistinct marks that may be Swiss hallmarks for 18 carat. White enamel dial, black Roman hour numerals, subsidiary seconds dial at 6 o'clock, date. dial at 12 o'clock. Interestingly, the numbers on the date dial go anti-clockwise. Gold hands, including what appears to be a sweep seconds hand. Stem wind, lever escapement. Swiss style movement, but no markings apart from "fast slow". on the balance cock on either side of the adjustment lever. Dimensions: 4.5 cm dial diameter, 5.5 cm case diameter, 6.5 cm high
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- Circa - A Latin term meaning 'about', often used in the antique trade to give an approximate date for the piece, usually considered to be five years on either side of the circa year. Thus, circa 1900 means the piece was made about 1900, probably between 1895 and 1905. The expression is sometimes abbreviated to c.1900.
- Date Aperture - A date aperture is a cut out section in the face of a watch or clock, displaying the day of the month.
- Lever Escapement - A lever escapement is a type of escapement mechanism used in mechanical clocks and watches to regulate the timekeeping of the movement. It was invented by British clockmaker Thomas Mudge in the 18th century and is now widely used in modern mechanical timepieces.
The lever escapement consists of three main parts: the escape wheel, the pallet fork, and the lever. The escape wheel is a wheel with teeth that is driven by the clock or watch's main spring or weight. The pallet fork is a two-pronged component that is positioned so that it can engage with the teeth of the escape wheel, and the lever is a small, L-shaped component that is attached to the pallet fork.
When the escape wheel turns, one of its teeth pushes against one of the pallet fork's prongs, causing the fork to pivot. As the pallet fork pivots, it releases the tooth and engages with the next tooth on the opposite side of the escape wheel. At the same time, the lever, which is connected to the pallet fork, rocks back and forth, allowing the escape wheel to turn at a regulated rate.
The lever escapement is prized for its accuracy and reliability and is commonly used in high-end mechanical watches. It allows for precise timekeeping by ensuring that the movement of the watch or clock is regulated and consistent, and its compact size makes it an ideal choice for use in small, portable timepieces. - Carat - A carat (abbreviated "ct") is a unit of measurement used to describe the weight of a diamond or other gemstone, and separately is a unit of measurement used to describe the weight of precious metals such as gold,.
For gemstones, one carat is equal to 0.2 grams or 200 milligrams. The weight of a diamond is one of the Four Cs (along with cut, colour, and clarity) that are used to determine a diamond's value.
It is important to note that a diamond's weight does not necessarily correspond to its size. A diamond's cut, which affects how well it reflects light, can make a diamond of a lower weight appear larger than a diamond of a higher weight. Additionally, the carat is not the only factor to determine the value of a diamond, other factors such as clarity, colour and cut are important too.
In the gold industry, the purity of gold is measured in carats (abbreviated "ct"), with 24 karats being pure gold and lower carat numbers indicating a lower purity level. So, for example, 18 carat gold is 18/24 or 75% pure gold, and 12 carat gold is 12/24 or 50% pure gold. - Movement - The technical name for the workings of a clock or watch, and does not include the dial or case.
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