German silver Special alloy composed of copper and zinc, with a nickel concentration of about 10%. German silver is stronger than brass and has been traditionally used by Lange for the manufacture of plates and bridges. The addition of nickel minimises the oxidation of German silver and thus eliminates the need to electroplate the alloy - it can remain "untreated".

The noble art of horology has always been intimately linked with precious metals. As was the case more than 100 years ago, Lange today still adheres to the strictest standards as regards material selection: - Untreated | German silver for movement parts - 18-carat gold or platinum for cases, crowns, and buckles - Silver or genuine enamel for dials - Sapphire crystal for glasses and casebacks - Exquisite precious stones for Lange tourbillon models and jewellery creations.