{"id":15593,"date":"2025-11-20T19:42:47","date_gmt":"2025-11-20T19:42:47","guid":{"rendered":"https:\/\/www.vintagemasters.eu\/?post_type=product&p=15593"},"modified":"2026-02-09T12:57:02","modified_gmt":"2026-02-09T12:57:02","slug":"vintage-omega-33-3-jumbo-multiscale-chronograph-from-1939","status":"publish","type":"product","link":"https:\/\/www.vintagemasters.eu\/nl\/product\/vintage-omega-33-3-jumbo-multiscale-chronograph-from-1939\/","title":{"rendered":"Vintage Omega 33.3 Jumbo Multiscale Chronograph from 1939"},"content":{"rendered":"

Historical and mechanical context<\/strong>
In the late 1930s, Omega sought more than just modest wrist\u2011chronographs; they pursued a movement platform that married precision with contemporary wrist ergonomics. The result: the calibre\u202f33.3\u202f(CHRO) movement\u2014a manual\u2011wind chronograph calibre derived from Lemania\u2019s CH15 movement.
Production of the 33.3 ran for roughly two decades, with estimates placing total output at approximately 13\u202f700 units. What makes this movement especially compelling is its position in Omega\u2019s evolution: part technical tool, part aesthetic artefact, and a direct precursor to the later calibre\u202f321\u2014a fact that early\u2011era collectors understand as a signpost of legacy.<\/p>\n

In this era, Omega was producing oversized cases (for the time), often around 37\u2009mm (many chronographs of the period were smaller) to accommodate the generous movement architecture. And multiscale dials\u2014tachymeter on the outer rim, telemeter (or even pulsometer) scales inboard\u2014were not mere decoration but practical registers tailored to military and \u201ctool\u2011watch\u201d purposes.<\/p>\n

The \u201cJumbo Multiscale\u201d reference in this piece<\/strong>
What sets this example apart is the combination of the oversized (for its era) case and a dial that features multiple scales\u2014a very desirable configuration among vintage\u2011chronograph connoisseurs. Multiscale dials of this kind underscore the watch\u2019s original intent: measuring both speed (tachymeter) and distance (telemeter) and even pulse. The multiscale layout elevates the dial beyond mere time\u2011telling to functional instrumentation.<\/p>\n

The \u201cJumbo\u201d aspect refers to how this model presented: a larger diameter, strong wrist presence, straight lugs and bold dial design\u2014all of which make this piece visually compelling today, especially against the backdrop of watches of the 1930s that often measured in the low\u2011to\u2011mid 30s mm. As described in reference guides of the 33.3 series, the cases often measured around 37.5\u2009mm which was generous at the time.<\/p>\n

Dial & aesthetic narrative<\/strong>
On this model, you\u2019ll find a dial that has aged gracefully: the outer tachymeter scale discreetly printed, the inner pulsations and telemeter ring, radiating in contrasting colours. The patina\u2014a rich even tone\u2014speaks to decades of measured wear and life lived on the wrist. That patina is not a flaw but a hallmark of authenticity and provenance.<\/p>\n

The dial architecture with its two\u2011register layout (small seconds and 30\u2011minute counter) plays off a clean symmetry around the central hands. References such as the CK987\/CK988 line of the 33.3 series commonly featured this layout.<\/p>\n

The case, with straight lugs and perhaps olive\u2011shaped pushers, gives the watch a purposeful yet elegant silhouette.<\/p>\n

Why this model matters to collectors<\/strong>
There are several reasons this particular 1939 Jumbo Multiscale example commands attention:<\/p>\n