A rare and highly collectible Baume & Mercier Tronosonic from the 1970s, powered by a smooth-sweeping ESA tuning fork movement—the same innovative mechanism used in early Accutron watches. Known for its unmistakable hum and precision timekeeping, this model showcases both vintage charm and horological significance.
Key Features:
Model: Baume & Mercier Tronosonic
Movement: ESA 9162 Tuning Fork (electric), recently serviced and in perfect working order
Case: Silver coloured textured dial with stainless steel case.
Case Size: 37mm (excluding crown)
Dial: Original dial with date at 3 o’clock
Bracelet: Brand new high-quality leather strap, aftermarket
Condition: Excellent vintage condition with light signs of wear. Case recently serviced and re-sealed
Box: Supplied with a Baume & Mercier presentation box
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