Cool Longines Skin Diver from approx 1970. This is quite a difficult model to find as few exist... it features a one-piece case similar to the Blancpains and measures 36mm excl. original crown. It has a lovely backelite bezel with orange indexes. The original dial with Tritium plots is also in great condition. Movement is the Automatic Longines Cal 505 with date which is ticking away nicely. Attached is a period Tropic strap but it also comes with a new NATO strap. Icing on the cake is the original inner and outer box. These are great watches and still undervalued and prices will surely rise as the Heritage models are more expensive.