assessing pocket watch problems · and common problems with pocket watches. • it does not cover...
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![Page 1: Assessing Pocket Watch Problems · and common problems with pocket watches. • It does not cover valuation or pricing of pocket watches. • Refer to the presentation “Determining](https://reader035.vdocuments.mx/reader035/viewer/2022062507/5fdd8006b5536112474c0c6f/html5/thumbnails/1.jpg)
AssessingPocketWatchProblemsShaun ClarkeNAWCC San Jacinto Chapter 139
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Content
Giving it the Once Over
Winding and Setting
Getting Inside
Under the Hood
It Runs, but…!
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Assessment,notValuation• Today’s presentation covers assessing condition and common problems with pocket watches.
• It does not cover valuation or pricing of pocket watches.
• Refer to the presentation “Determining Pocket Watch Quality” by Mr Artzner in the Education Section of our Chapter website.
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ToolTime• Case Opening Tool
• Loupe
• Case Knife
• Toothpicks
• Tweezers
• Assorted Keys
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GivingittheOnceOver• Open Face
• Sidewinder
• Hunting Case• Hinges• Cover
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GivingittheOnceOver• Case Material
• Nickel Alloy• Silver• Gold‐Filled (YGF)• Solid Gold
• Brassing
• DentsBrassing on YGF case
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GivingittheOnceOver• Bow
• Crown• Stem/Sleeve
BowCrown
Bow and crown missing, stem present
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GivingittheOnceOver
• Bezel
• Crystal• Condition• Material• Yellowing
Bezelmissing
Thick Glass Crystal
Yellowed Plastic Crystal
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GivingittheOnceOver• Hands
• Missing• Mismatched• Condition
• Face• Metal• Enamel
• Cracks / Chips Hairlinecrack
chip
Rust on hands
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Winding• Pendent wind • Key wind
Hole for key
No crown
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Winding• The Overwound Misnomer
• When a manual watch is wound completely, you will no longer be able to rotate the crown. That is fully wound, not overwound.
• If the watch is not running when fully wound, it is indicative of other issues.
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Winding• Broken Mainspring
• Very common.• Slight resistance when winding and the watch quietly "clicks" every so often, seemingly releasing the slight tension.
• Parts still available for common models.
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Setting• Pendant‐Set
Crown pushed “in” to wind mainspring
Crown pulled “out” to set hands
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Setting• Pendant‐Set problems
• Won't "click" from one position to the other
• Stem pulls out completely• May indicate an issue with damage to the sleeve
• Watch does not wind, or hands will not set• Indicates sleeve may need to be adjusted (with a sleeve wrench)
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Setting• Key‐Set
• From front• From back
Hands are set with key on square centre arbor
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Setting• Lever‐Set
• Railroad watches
Remove bezel, pull lever out and turn crown to set hands
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Setting• Pin‐Set
• More common on European watches
Press and hold in the ‘pin’ while
turning the crown to set
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GettingInside• Screw‐off back
• No hinge on the back• No visible "notch" in the seam for a case‐knife.
• Visible seam around rim of case back
Two seams
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GettingInside• Snap‐off back
• No hinge on the back• Visible seam with notch for case‐knife.
Notch(look carefully!)
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GettingInside• Hinged‐back
• Hinge visible on back and/or front
• Look for the notch for thumbnail or case‐knife
Thumb Notch
Hinges (front & back)
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GettingInside• Swing‐out
• No seams around the back cover i.e. back cover and body all one piece
• Remove front bezel and look for swing‐out movement
• ALWAYS pull out winding stem before lifting the movement out of the case.
One seam only
Hinge
Thumb‐nailnotch
UP!
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UndertheHood• Rust
• Superficial• Terminal
• Generally Dirty• Very common• Oil dried up• “WD40’d”
Surface Rust
Don’t even go there!
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UndertheHood• Missing/Wrong Parts
• Case Screws• Other Screws
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UndertheHood• Missing/Wrong Parts
• Balance• Regulator• Hairspring• Mainspring barrel• Jewels
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UndertheHood• Pivot Holes
• Oval pivot hole• Cracked jewels
• Screw set• Friction fit
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UndertheHood• Escapement Problems
• Balance Wobbles• Broken Balance Staff (very common)• Broken Jewels
Image from VintageWatchstraps.com © David Boettcher Balance Staff Pivot
Balance Hole Jewel
Broken pivot
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UndertheHood• Escapement Problems
• No pallet movement• Missing/Broken Roller Table Jewel
Roller TableJewel
Image from http://en.wikipedia.org/wiki/Lever_escapement
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ItRuns,but…!• Poor Amplitude
• Set Mainspring
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ItRuns,but…!• Poor Amplitude
• Power train problem• Rust?
• Pivot Issue• Pivot condition• Dirty / old oil
Squared off pivot end
Grooves
Pivot Damage
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ItRuns,but…!• Stops in various positions
• Pivot condition/damage• Balance Hole Jewel damage
Bent pivot
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ItRuns,but…!• Hands do not move (or sluggish)
• Loose Cannon Pinion• Minute Wheel problem
Cannon Pinion
Minute Wheel
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ItRuns,but…!• Poor Timekeeping
• Surface rust on Hairspring• Regulator pins adjustment• Hairspring damage• Magnetism
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Conclusion• Be methodical ‐ have a system
• Recognize;• Easy/low cost to fix• Complex/high cost to fix
• The most common issues are;• Dirty and/or Old Oil• Broken or Set Mainspring• Broken Balance