Not common at all. Most of those I saw came with the mention " Etanche ". I saw very few coming with Waterproof. It would be interesting to have a certificate on this one to see its provenance! [nt]
No date, nice case, superb patina of the tritium indices and hands, this Type XX 3800 Aeronavale is a cool looking watch. Here are three pictures I could take in a watch shop today. A very good neo vintage! Best, Nicolas ...
But the crown is not original (the issued crowns had a gold cap). This one had its crown replaced during the service. Lovely patina on the dial. Such a cool piece