A small crack in the crystal of your vintage Longines watch might seem like a minor issue, but it’s more urgent than it appears. These watches, crafted in an era of elegance and refinement, are more vulnerable as they age, with gaskets and case tolerances weakening over time. The real risk isn’t just the crack itself, but what can enter through it—moisture and dust can sneak into the case, potentially damaging the dial, discoloring luminous materials, or contaminating the movement. A tiny crack can grow over time, as temperature and pressure changes stress the damaged area, turning a small problem into a much larger one. Additionally, collectors and watchmakers notice even the slightest imperfections, and a cracked crystal can impact the value and collectability of your watch. Replacing the crystal with one that matches the original material and profile is essential to maintain the watch’s integrity. It’s not just about fitting a new crystal; resealing the case and pressure testing the watch are critical steps to ensure it remains sealed from the elements. If you notice fogging, loose edges, or changes in functionality, it’s a sign to act fast before the damage worsens. Addressing a cracked crystal promptly protects both the appearance and value of your vintage timepiece.
source: https://www.timesticking.com/dont-ignore-a-cracked-longines-watch-crystal/
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