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On the secondary market, this model typically trades in the $45,000 to $65,000 range, representing a significant decrease from its original retail price of approximately $82,000. While the pink gold version is the primary reference, Zenith later released a titanium variant under the \"Academy Christophe Colomb\" lineage featuring similar constant-force technology but different case dimensions."}, "listing_stats": {"count": 18, "median": 10400.0, "low": 6000.0, "high": 19900.0, "brands": 1, "merchants": 4}, "listings": [{"id": "h_16001967522137", "title": "Zenith Zenith El-Primero Covergirl Chronograph ref. A3818", "brand": "Zenith", "model": "Zenith El-Primero Covergirl Chronograph ref. 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