Guarantee and “History of Your Watch” booklet

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Reliable: the international Lange guarantee

Since 1994, every A. Lange & Söhne watch has been accompanied by the “History of Your Watch” booklet. In handwritten entries, it documents changes of ownership, dedications and service interventions, thus ensuring that the history of your A. Lange & Söhne timepiece can be traced back over many decades. The “History of Your Watch” booklet also contains the guarantee seal on which the international Lange guarantee is based.

The guarantee seal

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The first page of the “History of Your Watch” booklet shows the A. Lange & Söhne guarantee seal. It documents the individual data of your A. Lange & Söhne watch such as the reference, movement and case serial numbers. Please note that all guarantee documents will be issued only once.

The international Lange guarantee

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Our watchmakers perpetuate Ferdinand A. Lange’s ambition to craft “the world’s finest watches”. Part of this ambition is the international Lange guarantee. It is valid for two years after the date of purchase recorded in the “History of Your Watch” booklet. It applies to newly purchased watches and service interventions performed.

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