The Super Compressor case was developed by Piquerez, The super compressor style case includes two crowns, an inner rotating bezel ring, and a pressurized gasket case back system that leveraged the outside pressure to secure and make the case even more watertight. You can commonly brands utilized the case, including Longines, Universal Genéve, and Enicar. This specific Wittnauer Super Compressor has all of the key elements that we love here at Craft and Tailored. This watch possesses unique elements of design that make vintage timepieces special and worth collecting. This specific 1960's Wittnauer Super Compressor would make a great addition to an existing collection and or serve as a unique daily driver ready for life's adventures! SPECS Stock # WTNSC8006 Brand Wittnauer Style Dive Model Super Compressor Serial N/A Size Men's Material SS Dial Black Millimeters 36mm Bracelet 2pc Handmade Leather Strap CASE & BRACELET The case has been previously polished, remaining in excellent condition showing no wear. The twin crowns are original to the piece showing the cross-hatched texture and are signed with the brand’s signature “W”s. The watch will be supplied on a handmade strap. DIAL & HANDS The gorgeous black dial has taken on a wonderful patina. The inner rotating bezel is in excellent condition. The tritium markers have achieved a rich golden yellow patina, and under U.V. light inspection show no lume degradation. The original hands have aged perfectly to match the dial, when inspected with U.V. light the minute hand exhibits very minor cracking only visible under loupe. ACCESSORIES None. The watch is running at spec.