"Eterna has a very important place in the history of watchmaking. Just to mention two facts, consider that it was Eterna that introduced the ball bearings solution that is still used today on automatic movements and that ETA, the largest manufacturer of Swiss watch movements (today part of the Swatch Group), was founded by Eterna.

But there’s much more to discover. We invite you to follow us as we travel through times from the 18th century to the present days."

https://www.timeandwatches.com/p/the-hi ... on-in.html

Great read that left me wanting to read more.

Rock solid products from then to now. Only own one but it's a favorite.