New flat and automatic movement - centre sweep or small second hand - execution: 18 carat gold, 18 carat gold DeLuxe - waterproof models: stainless steel, 200 microns golplated, 18 carat gold, 18 carat gold DeLuxe. Gold medallion stamped or engraved in the bottom of the case. Antimagnetic and protected against shocks!
Longines 1961 magazine ad