TISSOT Seastar Navigator T12 Vintage World Time GMT Watch 1960s Diver Military

This Tissot Seastar Navigator T. 12 is a seldom-seen rendition of a 24-hour mechanical world timer, with a unique aesthetic delineation clearly tailored for a specific clientele - likely the cohort of military aviators. What sets this model apart is its adept incorporation of a 24-hour watch paradigm. Contrary to the customary approach of merely supplementing the dial or bezel with additional numerals (inserting a 13 at one o'clock, a 14 at two, and so forth), the Navigator T. 12 features a striking bi-chromatic dial, demarcating diurnal and nocturnal hours with 24-hour numerals. Complementing this, a rotating time-zone bezel displays 24 time zones, encompassing the International Date Line, which creates a bisecting line between the dial's contrasting tones. This nuanced design reflects the watch's 24-hour nature beautifully. Measuring 42mm, the Navigator not only exhibits substantial presence, but also boasts an impressive heft.

Case : stainless steel cushion case measuring approximately 42mm (excluding crown) and 50mm lug-to-lug, two original Tissot-signed hatched crowns at 2 and 4'o clock positions, 22mm lugs, Tissot galleon engraved on caseback. Movement : Tissot caliber 788 automatic movement with 21 jewels, serial number dates this piece to 1969. Dial : original two tone matte dial with upper section in orange and lower half in taupe, Arabic numerals, original handset with lume intact; inner rotating bezel showing major cities, there is some fade in the script. Band : unworn 22mm stainless steel jubilee bracelet with butterfly clasp.

The piece is in good working condition but service history is unknown. A service is recommended for optimal performance and accuracy. All vintage watches should be used underwater and is not certified waterproof.

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