I picked up this early Eterna Waterproof. There is not much information available. I am hoping for some input and opinions. The dial looks original to me. Case looks good to. What do you think?. View attachment 717225
Clamshell case! Does it have any patent numbers on the inside? Here is a link to David Boettcher's page on waterproof cases: http://www.vintagewatchstraps.com/waterproof.php