1970s Lip "Ninja" chronograph mint condition

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While many collectors chase "mint" dials, the "Tropical" dial is a rare gift from nature. This reference 1500 has seen its original black or blue surface age into a rich, organic brown—a chemical reaction to UV light that makes every example unique. Set against the classic 34mm Oyster case, this is a watch with a soul and a visual depth that no modern manufacturer can replicate.