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Rare Isaac Grasset Helical Coil Spring Wind 14K Solid Gold Pocket Watch CA1890
Estimated price for orientation: 9 100 $
Category: Antique
Class:
Description Movement: Mechanical: Hand-winding Closure: Open Face Age: Antique (pre 1920) Country Made: Switzerland Case Material: Yellow Gold Serial Number: 494
Rare, Possibly Unique Isaac Grasset Helical Coil Spring Wind in a 14K Solid Gold Case Man’s Pocket Watch
Swiss; Isaac Grasset; Man’s; Serial# 494; CA1890
Complications: Time only, rare patented spring wind!
CASE: The 14K yellow 16-size No. 994,850 open face case features floral and village decorations and is signed “Dueber 14K”.
DIAL: This white porcelain single sunk dial displays Roman numerals and spade hands.
MOVT: This stem-set No. 494 movement with lever escapement is gilt with a full plate layout and is signed.
CONDITIONS:
C 2 (The case is in perfect condition)
D 2 (The dial is in perfect condition)
M 2 (The movement is in perfect condition)
R 9 ½ (Rarity on a scale of #1 being very common to #10 being extremely rare)
Experts Opinion: This ultra rare movement was always issued in silver or base metal. This must have been a special order by a mason. An extremely rare, experimental movement in an exceptional special order gold case! AI-173-38 Helical Hairspring
A balance spring, or hairspring, is a spring attached to the balance wheel in mechanical timepieces. It causes the balance wheel to oscillate with a resonant frequency when the timepiece is running, which controls the speed at which the wheels of the timepiece turn, and thus the rate of movement of the hands. A regulator lever is often fitted, which can be used to alter the free length of the spring and thereby adjust the rate of the timepiece. The balance spring is a fine spiral or helical torsion spring used in mechanical watches, alarm clocks, kitchen timers, marine chronometers, and other timekeeping mechanisms to control the rate of oscillation of the balance wheel. The balance spring is an essential adjunct to the balance wheel, causing it to oscillate back and forth. The balance spring and balance wheel together form a harmonic oscillator, which oscillates with a precise period or "beat" resisting external disturbances, and is responsible for timekeeping accuracy.
CUSTOMER SERVICE: Phone 1-800-424-5353 Contact: Rick Gilbert Hours:9 - 5 EST, Monday - Friday Address: eAshland_net Sarasota Arts & Antique Center 640 South Washington Blvd, Suite 200 Sarasota, FL 34236 INTERNATIONAL CUSTOMERS: Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer’s responsibility. Please check with your country’s customs office to determine what these additional costs will be prior to bidding/buying. These charges are normally collected by the delivering freight (shipping) company or when you pick the item up do not confuse them for additional shipping charges. We do not mark merchandise values below value or mark items as “gifts” - US and International government regulations prohibit such behavior. CODE OF ETHICS...Deal with Honesty Ashland is proud of its reputation as a trusted dealer in antique timepieces. Our customers trust and respect is paramount to the success of our business and to that end we constantly strive to exceed your expectations by adhering to the guidelines listed below: eAshland_net
Description
| Movement: | Mechanical: Hand-winding | Closure: | Open Face |
| Age: | Antique (pre 1920) | Country Made: | Switzerland |
| Case Material: | Yellow Gold | Serial Number: | 494 |
Swiss; Isaac Grasset; Man’s; Serial# 494; CA1890
Complications: Time only, rare patented spring wind!
CASE: The 14K yellow 16-size No. 994,850 open face case features floral and village decorations and is signed “Dueber 14K”.
DIAL: This white porcelain single sunk dial displays Roman numerals and spade hands.
MOVT: This stem-set No. 494 movement with lever escapement is gilt with a full plate layout and is signed.
CONDITIONS:
C 2 (The case is in perfect condition)
D 2 (The dial is in perfect condition)
M 2 (The movement is in perfect condition)
R 9 ½ (Rarity on a scale of #1 being very common to #10 being extremely rare)
Experts Opinion: This ultra rare movement was always issued in silver or base metal. This must have been a special order by a mason. An extremely rare, experimental movement in an exceptional special order gold case! AI-173-38 Helical Hairspring
A balance spring, or hairspring, is a spring attached to the balance wheel in mechanical timepieces. It causes the balance wheel to oscillate with a resonant frequency when the timepiece is running, which controls the speed at which the wheels of the timepiece turn, and thus the rate of movement of the hands. A regulator lever is often fitted, which can be used to alter the free length of the spring and thereby adjust the rate of the timepiece. The balance spring is a fine spiral or helical torsion spring used in mechanical watches, alarm clocks, kitchen timers, marine chronometers, and other timekeeping mechanisms to control the rate of oscillation of the balance wheel. The balance spring is an essential adjunct to the balance wheel, causing it to oscillate back and forth. The balance spring and balance wheel together form a harmonic oscillator, which oscillates with a precise period or "beat" resisting external disturbances, and is responsible for timekeeping accuracy.
CUSTOMER SERVICE: Phone 1-800-424-5353 Contact: Rick Gilbert Hours:9 - 5 EST, Monday - Friday Address: eAshland_net Sarasota Arts & Antique Center 640 South Washington Blvd, Suite 200 Sarasota, FL 34236 INTERNATIONAL CUSTOMERS: Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer’s responsibility. Please check with your country’s customs office to determine what these additional costs will be prior to bidding/buying. These charges are normally collected by the delivering freight (shipping) company or when you pick the item up do not confuse them for additional shipping charges. We do not mark merchandise values below value or mark items as “gifts” - US and International government regulations prohibit such behavior. CODE OF ETHICS...Deal with Honesty Ashland is proud of its reputation as a trusted dealer in antique timepieces. Our customers trust and respect is paramount to the success of our business and to that end we constantly strive to exceed your expectations by adhering to the guidelines listed below: eAshland_net