Throughout the horological world, collectors and aficionados discuss with great fervor, their favorite brands, models, and even vintage versus modern timepieces, and one of the most passionately debated topics is movements. It is the heart of the watch, and the driving force for precision timekeeping, with many collectors having his or her definitive favorites. Omega’s manual-winding caliber 33.3 CHRO is an icon amongst collectors. It was launched in 1933, originally as a monopusher chronograph, however by the late 1930s, the brand redesigned it, and used the movement in some of their finest two pusher chronographs. In 1937, the caliber was fitted into Omega’s first water resistant chronograph watch – the reference CK 2077, and a model that can also be considered a turning point in the firm’s history. The present timepiece is a wonderful, early example of these early water-resistant chronographs. Featuring an oversized, 38.5mm diameter case with screw-down caseback, it must be viewed as an early, multi-purpose tool watch with its multi-scale dial and robust, highly water resistant case construction. Manufactured in 1938 and delivered in 1947 to South America, the gorgeous and rare salmon colored dial, with its red outer tachymeter scale, and inner, mirrored black telemeter scale combine to give it a modern, legible aesthetic. Rarely seen on the market with salmon dial and in such well-preserved condition, this watch, with its ideal case size for today’s tastes, represents a tremendous value to collectors of extraordinary chronographs.