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Restoration

 
 
 
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1
Diagnosis
A specialist watchmaker conducts a detailed, full examination to establish the nature of the tasks to be performed and identifies the watch model from its unique serial number.
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2
Case and movement disassembly
Disassembly of the case and its components (glass, back, bezel, seals, etc.) and separation of the movement from the case.
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3
Polishing
Polishing of the case to the original specifications, taking the age of the watch into consideration.
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4
Case cleaning
Cleaning of the case by immersion in special baths used for ultrasound treatment.
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5
Movement cleaning
Deep cleaning of all the components of the disassembled movement, using ultrasound and specific baths. During this process, the washing basket rotates slowly as it is lowered.
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6
Verification of components
Examination of each component to establish whether signs of deterioration are present. Where applicable, repair or replace components.
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7
Part taken from stock
A new part is taken from stock as a replacement for a part which has been identified as defective.
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8
Adjustment of the part
Adjustment of the part according to requirements. In this case, adjustment of the wheel on the pivoting tool.
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9
Movement reassembly
Assembly and oiling of movement to Longines specifications.
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10
Installation
Fitting the movement, complete with its dial and hands, inside the case and securing it in place.
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11
Testing
Testing the precision of the watch using a measurement and calibration device and adjustment to Longines specifications.
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12
"Before and after" comparison
Comparison of the watch upon arrival at the Longines workshops and after restoration.
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