The ETA 2872 is a reliable vintage automatic watch movement from the ETA 2800 family, produced starting in the 1970s.
Overview
Introduced as an economical alternative to the popular ETA 2824-2, the 2872 features a self-winding mechanical design with a central rotor. It measures 11.5 lignes (25.6mm diameter) and 5.35-5.5mm thick, making it suitable for mid-sized dress watches. Production emphasized Swiss-made quality with Incabloc shock protection and ball-bearing rotor for smooth operation.
Key Specifications
Beat Rate: 28,800 vibrations per hour (4 Hz) for smooth sweeping seconds
Jewels: 17/21/25, reducing friction in critical pivots
Power Reserve: Approximately 38-44 hours
Lift Angle: 52-53 degrees
Functions: Hours, minutes, sweeping seconds, quickset date at 3 o’clock
Variants and Features
The 2872 supports hand-winding and offers optional hacking (seconds stop when setting time), upgradable via a stop lever part. Related calibers include the slower 2873 (21,600 bph), manual-wind 2852, and siblings 2870/2878 with minor differences in jewels or hacking. Dial feet positions match broader ETA 2800 series for easy case compatibility.
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Watch Parts Enquiry
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Stem, Crown, Hands & Spares might be available for this movement.
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