Rolex Ovettone

Ref, 5048 - 14K Rose gold case - 1941 - Cal,620 - 32mm

A Rare Jewel from Rolex’s Foundational Era

The Rolex Oyster Perpetual Ref. 5048, produced circa 1941, is a remarkable relic from a pivotal era in the evolution of wristwatches and a living testament to Rolex’s trailblazing spirit. It brings together a convergence of Rolex’s key innovations—the waterproof Oyster case,the self-winding Perpetual movement, and the enduring elegance of gold craftsmanship. What sets this watch apart is not only its technical heritage but also its rarity,aesthetic purity, and role as a precursor to modern Rolex design language.

Encased in 14K rose gold, with a compact 32mm case affectionately referred to by collectors as “Ovettone” (Italian for “little egg”), the Ref. 5048 embodies the soft, rounded profiles that defined early bubblebacks. It was produced during the uncertain days of World War II, a time when manufacturing resources were scarce and priorities were shifting globally. That Rolex continued to make refined, forward-thinking mechanical timepieces like the 5048 amid wartime turmoil speaks volumes about the company’s commitment to both innovation and craft.

This specific reference is not just a watch—it’s a time capsule. It captures Rolex in the early stages of becoming the brand that would later dominate the luxury sports watch world.

A Landmark in Rolex’s Technological Breakthroughs

To understand the value of the Ref. 5048, one must first appreciate the technological revolution Rolex ignited in the decades leading up to it.

  • In 1926, Rolex introduced the Oyster case, the world’s first truly waterproof wristwatch case.
  • In 1931, Rolex followed with the Perpetual rotor, which allowed automatic winding from wrist movement—ushering in the modern automatic watch.

By 1941, with the Ref. 5048, Rolex had perfected this combination. The 5048 houses the Caliber 620, a robust, no-frills automatic movement that was both accurate and serviceable. It was one of the earliest Rolex calibers built to be housed in the waterproof Oyster case, and it cemented Rolex’s reputation for producing tool watches with elegance—a philosophy still central to its identity today.

Design That Echoes Through Rolex History

While modest in size by modern standards, the 32mm Ovettone case of the 5048 was slightly larger and rounder than many watches of its time. This design direction would later evolve into the famous "bubbleback" watches, and eventually influence the proportions of the Datejust, introduced just a few years later in 1945.

The rose gold case is another layer of rarity and desirability. During the 1940s, yellow gold was more commonly used, and stainless steel became dominant due to war-time constraints. Rose gold was far less produced, and its warmer tone and unique aging patina make it stand out among vintage collectors today.

The Oyster Coronet crown—an early version of the now-iconic Rolex logo—also links this watch directly to the brand's pursuit of a fully water-resistant wristwatch. It’s an early signature that marks this piece as a pioneer in modern watchmaking.

A True Collectible

Whether seen through the lens of design, horological innovation, or historical context, the Rolex Oyster Perpetual Ref. 5048 holds a distinguished place in the Rolex timeline. It is not merely a watch; it is a physical representation of Rolex’s early triumphs—a piece that connects us to a time when innovation was born of necessity, and style was both understated and everlasting.

For those who own one, or seek to, the Ref. 5048 is not just rare—it’s revelatory. It reflects not only the birth of Rolex’s technical legacy, but also the enduring charm that has made the brand an icon for over a century.