The Rolex Submariner 14060M, a no-date icon revered by collectors and enthusiasts alike, exists in two subtly different iterations: the 2-liner and the 4-liner. The distinction, however, often leads to heated debates and misconceptions. This article delves deep into the differences between these two versions, dispelling myths and clarifying the true significance (or lack thereof) of the line count on the dial. We'll explore the technical specifications, the market value, and the ultimately subjective preference that drives collectors' choices.
Understanding the Nomenclature: 2-liner vs. 4-liner
The "2-liner" and "4-liner" designations refer to the number of lines of text found on the dial below the Rolex crown. The 4-liner boasts four lines of text: "ROLEX," "OYSTER PERPETUAL," "SUBMARINER," and "1000ft=300m." The 2-liner, conversely, features only two lines: "ROLEX" and "SUBMARINER." The absence of "OYSTER PERPETUAL" and the depth rating differentiates it visually. However, this seemingly significant visual difference masks a far more nuanced reality.
The Core Difference: COSC Certification and Movement
The crucial difference between the Rolex 14060M 2-liner and 4-liner lies not in the case, bezel, crystal, or bracelet, but rather in the movement. While both models utilize a caliber 3130 movement, the 4-liner's movement is officially certified by the Contrôle Officiel Suisse des Chronomètres (COSC), guaranteeing a higher level of accuracy within specific parameters. The 2-liner's caliber 3130, however, lacks this official COSC certification.
This is where much of the confusion arises. Many believe the lack of COSC certification in the 2-liner renders it inferior. However, this isn't necessarily true. While COSC certification represents a rigorous testing process, ensuring accuracy within a specific range, it's not a guarantee of superior long-term performance or reliability. Rolex's own internal quality control standards are exceptionally high, and even uncertified movements generally meet demanding accuracy levels. The 3130 movement, regardless of COSC certification, is a robust and reliable mechanism capable of decades of service with proper care.
The Myth of Post-Service Equivalence
A common argument circulating amongst collectors is that the difference between the 2-liner and 4-liner becomes irrelevant after the first service. This statement, while containing a kernel of truth, requires careful consideration. The claim suggests that any competent watchmaker, regardless of affiliation, can service both movements to an equivalent standard, effectively negating the initial COSC certification.
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