Don't miss the next drop
The dial is where this Tissot Aquasport asks to be looked at first. The original silver surface has aged into a warm bronze tropical patina with the cleanest kind of vertical brushing still visible underneath the colour shift, and the gilt printed Tissot script and AQUASPORT wordmark sit at the upper half of the dial against that bronze field as if they were always meant to read this way. In our opinion, a tropical-aged Aquasport from the 1940s is one of the more honest entries into pre-1950 Swiss sport watches that the vintage market currently offers, and this one is a particularly handsome example of how the model wears decades of patina without losing any of its original geometry.
Tissot launched the Aquasport line in 1939, developed in collaboration with the Swiss Laboratory for Watchmaking Research of Neuchâtel as one of the brand’s first water-resistant, anti-magnetic, shockproof, and dust-tight wristwatches. The model arrived just ahead of the war years and quickly slotted into the sport-and-military category of Tissot’s catalogue, where its all-stainless construction, screw-type caseback engineering, and legible Arabic dial layout made it a quietly practical companion to the more militarised Tissot Antimagnetique pieces of the same period. The Aquasport was not officially issued in the way some of the Tissot military references were, but it shares the spec sheet and the visual vocabulary, which is why collectors tend to file the 1940s Aquasport under the broader Tissot WWII-era umbrella.
The caliber 27 inside this Tissot Aquasport is the part of the story we find ourselves talking about most when this watch is on the bench. The 27 was a small-format manual-wind movement released by Tissot in 1936, with a 12”’ (26.5mm) diameter, 4.05mm height, 15 jewels running at 18,000 vibrations per hour, and a 43-hour power reserve, configured for hours, minutes, and a small-seconds register at six. The 27 family came out of the SSIH years when Tissot, Omega, and Lemania shared engineering DNA, and it became the workhorse manual caliber that powered most of the brand’s small-case sport, dress, and military pieces from the late 1930s through the late 1940s before evolving into the shock-protected 27-1T variant in 1950. Movements of this generation are wonderfully simple to service, hold accuracy beautifully when properly oiled, and carry the kind of pre-modern Swiss finishing (snailed wheels, polished steelwork, ruby chatons) that vintage specialists still seek out specifically.
The case is stainless steel and measures 28mm across the bezel, 33mm lug-to-lug, with a 14mm lug width, which places this firmly in the small-format wartime sizing that defined Swiss sport watches before the post-1950 push toward larger diameters. The construction is the classic two-piece Aquasport build: stepped bezel, slim mid-case, downturned faceted lugs, and a press-fit screw-style stainless caseback. The outer caseback is engraved around the perimeter with NON MAGNETIC, WATERPROOF, and SHOCK ABSORBER, with the serial 1179782 stamped large at the centre, the Tissot script logo in its period cartouche, and SWISS beneath it. The inner caseback is stamped ACIER INOXYDABLE and BREVET in the period French nomenclature, ringed by the multi-tier circular snailing pattern that Tissot used on this generation of cases. The case carries the honest tool wear, light surface scratching, and case-back markings consistent with eight decades of service intervals, and we read all of it as character rather than defect.
The dial layout is the late-1930s Tissot sport vocabulary at its most legible. Applied or printed gilt Arabic numerals run the full hour positions 1 through 12 except at six, where the sub-seconds register takes the position with its own contrasting black-painted minute track quartered at the 15, 30, 45, and 60 marks. The outer minute chapter is a fine black-on-bronze railroad track with luminous-dot accents at each hour position, and SWISS MADE prints at the very bottom edge of the dial below the chapter ring. The hands are the original cathedral pattern with luminous fill long since aged to a warm beige (consistent with radium lume of this period), and the sub-seconds hand is the matching small gilt baton. There are no signs of refinishing or redial work on this piece. What you see is what eighty years of honest wear produces on an original Tissot Aquasport dial.
We pair this Tissot Aquasport on an olive canvas military-style strap, which reads as the right pairing for a wartime sport watch and lets the bronze patina on the dial carry the visual weight without competing colour from a contrasting leather. The strap is sized to an 8-inch maximum wrist and is finished on a brushed stainless buckle. We can re-spec the pairing at the buyer’s request if a different strap material reads better for the intended rotation, though the olive canvas is the honest period match in our opinion.
Serviced in-house at OTTUHR and backed by our 2-year mechanical warranty, this Tissot Aquasport is, for the collector who values pre-1950 Swiss sport-watch construction and an honest tropical dial over a polished modern presentation, one of the more characterful small-format vintage pieces to come through our cases recently. To us, the combination of the warmly bronzed factory dial, the original cathedral hands, the legible Arabic chapter, and the stamped caseback nomenclature of the wartime period is exactly the kind of completeness that makes a 1940s Tissot worth wearing as a daily watch rather than locking into a collector’s drawer.
