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1. The Origin (My Specific Piece)
Model: Must de Cartier Tank, Manual-wind (LM)
Movement: Genuine Cartier manual-wind caliber (ETA 2512 base) with faint remaining "CARTIER" engraving and distinct "SWISS" stamp on the movement plate.
Case Back Markings:
Stamped "725" inside an octagonal frame (where the usual "925" should be).
"ARGENT TYPE US" / "PLAQUE OR G 10M" / Vertical "American" / "USA" / Triangular maker’s mark with "AB" inside.
2. Initial Hypotheses
Silver Purity Theory: Speculated…
Model: Must de Cartier Tank, Manual-wind (LM)
Movement: Genuine Cartier manual-wind caliber (ETA 2512 base) with faint remaining "CARTIER" engraving and distinct "SWISS" stamp on the movement plate.
Case Back Markings:
Stamped "725" inside an octagonal frame (where the usual "925" should be).
"ARGENT TYPE US" / "PLAQUE OR G 10M" / Vertical "American" / "USA" / Triangular maker’s mark with "AB" inside.
2. Initial Hypotheses
Silver Purity Theory: Speculated…
Case Study Summary: Must de Cartier Tank "725" American Variant
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