Eterna 1470
Eterna Cal. 1470 was one of a family of automatic watch movements produced in the 1960's.
Overview
ETA was one of the three firms "chosen" to develop advanced automatic watch movements by Ebauches SA, thanks in part to their history with Eterna. The chief designer at ETA, Heinrich Stamm, had created many of the company's important watch movements, and was famous for the Eterna-Matic line of watches.
Cal. 1470 was a full-size ball bearing automatic movement.
Technical Details
Cal. 1470 measures 4.55 mm thick, both in date and non-date versions. Both 12.5 ligne and 13 ligne variants were produced.
All have 21 jewels, operate at 21,600 A/h, and have 44 hour power reserve.
Cal. 1470 (and the similar Cal. 1471) share the ratchet, setting, pawl winding, and auxiliary reversing wheel with the predecessor Eterna 1438. It is unrelated to the contemporary Eterna 1466 automatic family.
Variants
Cal. 1470 one of a family of automatic movements.
All movements use suffix "K" to signify Kif-Ultraflex shock protection.
- Eterna 1470 - 12.5 ligne
- Eterna 1480 - date
- Eterna 1471 - 13 ligne
- Eterna 1481 - date