Eterna Héritage 1948 Grande Date Chronometer (COSC) Automatiqu... for $3,156 for sale from a Private Seller on Chrono24
Eterna - 1948 Legacy Big Date | Time and Watches | The watch blog
Eterna 1948 for $1,003 for sale from a Private Seller on Chrono24
Bonhams : Eterna. A fine and unique 18ct gold perpetual calendar chronometer chronograph wristwatch with moon phases with transparent case back dedicated 'Oliver Porsche zum 40.Geburtstag-Eterna SA', with Certificate of Origin, papers