Eterna Cal. 1521 and 1522 Movement Parts List
Parts list and technical reference for Eterna caliber 1521 and 1522 automatic watch movements. The caliber 1521 is an 11.5 ligne movement measuring 25.60 mm in diameter with a 4.60 mm height, operating at 36,000 vibrations per hour. The caliber 1522 is a 13 ligne movement measuring 29.00 mm in diameter with a 4.60 mm height, also operating at 36,000 vibrations per hour. This technical documentation features numbered component illustrations and dial designs for both movements, providing essential identification and reference for watchmakers and technicians servicing these manual wind calibers.
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