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14K Gold Hunter Case 21-Jewel Three-Finger Bridge Movement Elgin Pocket Watch

Estimated price for orientation: 3 800 $

Category: Antique
Class:











Description
Movement: Mechanical: Hand-winding Closure: Full Hunter
Year of Manufacture: 1890-1899 Features: 12-Hour Dial
Brand: Elgin Escapement Type: Lever
Material: 14K Yellow Gold, Solid Gold Serial Number: 6,463,169


Superb 21-Jewel Three-Finger Bridge Movement Elgin Pocket Watch with 14K Gold 16 Size Hunter Case
Elgin; U.S./Ill.; Man’s; SN#6,463,169; CA1895
CASE: The 14K yellow-gold 16-size No. 644,367 hunter case displays floral/geometric decorations and is signed “Wadsworth.”
DIAL: This white porcelain single sunk dial features Arabic numerals, Breguet hands and is signed “Elgin.”
MOVT: The 21-jewel stem-set No. 6,463,169 nickel movement has a lever escapement, 6 adjustments, bridge-style layout and is signed.
C 2 (Case is in Perfect Condition)
D 2 (Dial is in Perfect Condition)
M 2 (Movement is in Perfect Condition)
R 9 (Rarity Grade on a scale of #1 being very common to #10 being extremely rare)
Expert’s Opinion: What a fabulous 21-jewel movement housed in a flawless fully carved floral case, a perfect dial rounds this package off. Weighs 81.4 Grams TW.  AI-AM62016-32
Hunter Cases
A hunting case covers the face of the watch consealing the dial.  The case is opened by pressing the stem or the crown of the watch.  Hold the watch in your right hand with the bow between the index finger and thumb.  Press on the pendant-crown with the right thumb to release the cover exposing the face.  When closing, do not SNAP the cover.  Press the crown to move the catch in, close the cover, then release the crown.  This will prevent wear on the rim and catch.
Stem-wind, Lever-Set Movements
Mandatory for all railroad watches after roughly 1908, this kind of pocket watch was set by opening the crystal and bezel and pulling out the setting-lever (most hunter cases have levers accessible without removing the crystal or bezel), which was generally found at either the 10 or 2 o'clock positions on open-faced watches, and at 5:00 on hunting cased watches. Once the lever was pulled out, the crown could be turned to set the time. The lever was then pushed back in and the crystal and bezel were closed over the dial again. This method of time setting on pocket watches was preferred by American and Canadian railroads, as lever setting watches make accidental time changes impossible. After 1908, lever setting was generally required for new watches entering service on American railroads.
Lever Escapement
An escapement is a device in mechanical watches and clocks that transfers energy to the timekeeping element (the "impulse action") and allows the number of its oscillations to be counted (the "locking action"). The impulse action transfers energy to the clock's timekeeping element (usually a pendulum or balance wheel) to replace the energy lost to friction during its cycle and keep the timekeeper oscillating. The escapement is driven by force from a coiled spring or a suspended weight, transmitted through the timepiece's gear train. Each swing of the pendulum or balance wheel releases a tooth of the escapement's escape wheel gear, allowing the clock's gear train to advance or "escape" by a fixed amount. This regular periodic advancement moves the clock's hands forward at a steady rate. At the same time the tooth gives the timekeeping element a push, before another tooth catches on the escapement's pallet, returning the escapement to its "locked" state. The sudden stopping of the escapement's tooth is what generates the characteristic "ticking" sound heard in operating mechanical clocks and watches.
Adjustment
Watch adjustment is the process of correcting those errors in the watch that cause variation in time keeping. These include temperature influences, variation in driving power and position of the watch with respect to mechanism such as pendant up or dial up.
Watches with better calibre movements will have been adjusted at the factory for a number of positions.  The usual array of positions include a subset of the following positions:
1. Dial up   2. Dial down  3. Bow up  4. Bow down (Not required by Railroad) 5. Bow left  6. Bow right
These positional adjustments are intended to insure that the watch is just as realiable and accurate regardless of the position in which it is stored or used. In addition to positional adjustments, the watch may also be adjusted for Temperature(heat/cold).  Temperature affects different elements in different ways.  Heat will cause some metals to expand faster than others, and cold may cause some metals to contract more than others.  A watch that is adjusted to temperatures will usually include some combination of metals that allow the watch to maintain its proper functionality within a larger range of temperatures than one that is not adjusted for temperature. Another type of adjustment is Isochronism.  As a typical watch spring unwinds the pressure it exerts on the wheels of the movement reduces.  This has the potential to create a difference in the operating speed of a fully wound watch versus the