Workshop Blog – Atmos 522 Gold Plate

Jaeger LeCoultre Atmos 522 Gold Plate

Caliber: 522

Serial: #60,815

Dat of Manufacture: 04.01.1954


Before Photos – Click on Any Image to Enlarge Viewer

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This Jaeger LeCoultre Atmos 522 arrived at our workshop in decent case and cosmetic condition. It didn’t have any blatant eyesores or staining, however it did have visible oxidization and pitting in the finish. Due to our popularity in our Atmos case restoration services, we have seen clocks in much worse of a starting condition for restoration. Overall it was a good starting position for a case restoration and gold plate finish.

The movement of this Atmos Clock required our standard overhaul technique, a cleaning, oil and bellow test. The bellows are good and the wire condition is satisfactory for timekeeping. The balance has a slow and slightly limited range of motion, but that has been commonplace in our experience when servicing this caliber, as well as the 526-5 model of Atmos Clock. The range of balance motion and the speed of rotation are dependent on a few variables, namely these variables are the mass or weight on the balance wheel, the length and thickness of the wire, the amount of power or wind on the mainspring, as well as, and in combination with the poise or position of the pallet fork.  The method of testing the wire condition in an Atmos Clock is performed by examining the rotation and the timekeeping ability of the instrument. This clock keeps good time, so for the sake of reducing the expenses for our client, as well as the waiting time for the completion of this restoration project, we did not replace the suspension wire.

522 Gold Plate Process

The technique for stripping and buffing or polishing the case metal for this Atmos 522 is a slightly different variation because of the unique milling pattern on the front panel of the clock. When beginning this Atmos 522 Gold Plate project, we were aware that any amount of buffing will slightly reduce the light reflection design of the door milling, so it was important to very lightly strip and polish the door. It is important to note here, that the electroplating process doesn’t improve the metal condition in anyway. The plating reaction occurs at the surface of the metal, and so any imperfections will also be visible in gold. That being said, when restoring the Atmos Clock cases, the majority of the elbow grease and labor are put into the preparation of the metal to take gold. Considering this, it was important to balance the amount of buffing to improve metal without bludgeoning or dulling  the milling pattern.

Overall we are pleased with the way that this Atmos 522 Gold Plate restoration project turned out, and we hope the owner of the clock is satisfied as well. We personally give our gratitude and thanks to this client for his business and patience in the completion of this project. 

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Thank you for reading our Workshop Blog and for your interest in Atmos Clocks. If you have a clock for restoration or questions regarding the repair or sales of this magnificent clocks please do not hesitate to contact Michael T. Holman at 612-244-4557 or with email at

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