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Vintage Piaget help needed — authenticity & ID
Hi all, hoping someone can help identify this vintage Piaget.
Outer case back: “FOND ACIER INOXYDABLE”, serial 135100
Inner case back: “PIAGET SWISS”, number 60187
Movement: manual wind, “PIAGET SWISS” on plate, “UNADJUSTED” stamped, “AZM” on balance cock
Dating it to ~1965–68 based on the serial. Main questions: Is “AZM” a known Piaget-era supplier? Any authenticity red flags? Thanks!