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16-Size White Gold Filled 23-Jewel Ball 998 Elinvar Railroad Pocket Watch CA1938
Estimated price for orientation: 3 500 $
Category: Modern
Class:
Description Year of Manufacture: 1930-1939 Movement: Mechanical (Hand-winding) Brand: Ball Escapement Type: Lever MPN: Does Not Apply Display: Analog Material: White Gold Filled Serial Number: B649,069 Closure: Open Face Model: 998 Elinvar Features: 12-Hour Dial, Arabic Numerals, Subsidiary Seconds Dial Country/Region of Manufacture: United States
Admirable 16-Size White Gold-Filled 23-Jewel Ball 998 Elinvar Man’s Railroad Pocket Watch
U.S./Ohio; Ball; Man’s; SN#B649,069; CA1938
CASE: The white gold-filled 16-size (45-49MM) No. 7,923,967 open face case displays floral/geometric decorations and is signed “Ball Model.”
DIAL: The white porcelain single sunk dial features Arabic numerals, spade hands, subsidiary seconds dial and is signed “Ball.”
MOVT: The 23-jewel lever-set No. B649,069 nickel movement adjusted to 5 positions, motor barrel, has a lever escapement, bridge-style layout and is signed “Ball Watch Co.”
C 2 (The Case is in Perfect Condition)
D 2 (Dial is in Perfect Condition)
M 3 (The Movement is in Very Good Condition)
R 9-1/2 (Rarity based on a scale of #1 being very common to #10 being extremely rare)
Expert’s Opinion: A hard-to-find beautiful condition 23-jewel Ball 998 Elinvar 14K white gold-filled mint Ball case with stirrup bow. Fully decorated back lid, a great addition to any collection! AI-CAT180-23te 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. Bridge Style Layout
The metal bar which bears the pivot of wheel and is supported at both ends. The bridge style watch has two or three fingers to hold the wheels in place and together are called a bridge. The term bridge (horologically) is one that is anchored at both ends. 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 same watch in an nearly fully unwound state. Adjustments for isochronism attempt to compensate for this potential by maintaining the same pressure from the spring throughout most of the operating range of the watch. This sort of adjustment was generally seen only on the finest railroad grade
Description
| Year of Manufacture: | 1930-1939 | Movement: | Mechanical (Hand-winding) |
| Brand: | Ball | Escapement Type: | Lever |
| MPN: | Does Not Apply | Display: | Analog |
| Material: | White Gold Filled | Serial Number: | B649,069 |
| Closure: | Open Face | Model: | 998 Elinvar |
| Features: | 12-Hour Dial, Arabic Numerals, Subsidiary Seconds Dial | Country/Region of Manufacture: | United States |
U.S./Ohio; Ball; Man’s; SN#B649,069; CA1938
CASE: The white gold-filled 16-size (45-49MM) No. 7,923,967 open face case displays floral/geometric decorations and is signed “Ball Model.”
DIAL: The white porcelain single sunk dial features Arabic numerals, spade hands, subsidiary seconds dial and is signed “Ball.”
MOVT: The 23-jewel lever-set No. B649,069 nickel movement adjusted to 5 positions, motor barrel, has a lever escapement, bridge-style layout and is signed “Ball Watch Co.”
C 2 (The Case is in Perfect Condition)
D 2 (Dial is in Perfect Condition)
M 3 (The Movement is in Very Good Condition)
R 9-1/2 (Rarity based on a scale of #1 being very common to #10 being extremely rare)
Expert’s Opinion: A hard-to-find beautiful condition 23-jewel Ball 998 Elinvar 14K white gold-filled mint Ball case with stirrup bow. Fully decorated back lid, a great addition to any collection! AI-CAT180-23te 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. Bridge Style Layout
The metal bar which bears the pivot of wheel and is supported at both ends. The bridge style watch has two or three fingers to hold the wheels in place and together are called a bridge. The term bridge (horologically) is one that is anchored at both ends. 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 same watch in an nearly fully unwound state. Adjustments for isochronism attempt to compensate for this potential by maintaining the same pressure from the spring throughout most of the operating range of the watch. This sort of adjustment was generally seen only on the finest railroad grade