The voice on the phone grew quieter. “It was on the wrist of a commander during a classified night mission in the Adriatic, 1961. His boat vanished. No wreckage. No bodies. NATO called it an accident. The Italian Navy called it La Notte X —The X Night.”
“The other unrecovered watch,” Marco whispered. “What happened to it?”
“Find anything interesting?” Sal asked. x serial number rolex
It didn't start with a 2, 3, or 4 million—the usual range for a 1960s Submariner.
Not an "X" as in a letter in a random sequence. Rolex serial numbers are seven digits, purely numeric. But here, crisp and deep as the day it was stamped, was: . The voice on the phone grew quieter
A long pause. “Rolex never issued an X-prefix serial. Not for production. But there’s a rumour… a single batch of fifty watches in 1957. The ‘X’ stood for Esperimento —Experiment. They were issued to the Italian Navy’s underwater demolition unit. The X Flottiglia MAS .”
Here’s a story built around the idea of an "X serial number Rolex" — a detail that, in the watch world, can signify a specific era, a factory anomaly, or even a lost provenance. The X-Factor No wreckage
He heard footsteps. Sal, the fisherman, was coming back early.
The Swiss voice hesitated. Then: “Because it’s not running on a mainspring, Marco. We measured the one we recovered in ’64. It runs on decay . The tritium isn’t just luminous. It’s a slow, cold nuclear battery. That watch will tick for another three hundred years. But whoever wears it…”
Marco looked down at the X-serial Rolex. The second hand ticked one more time. Then he slowly reached for his screwdriver and began to close the case back—as if he’d never seen a thing.
“Tritium. But a specific grade. Hyper-luminescent. Almost unstable. They wanted a dial that would glow for twenty years without recharging. It worked—too well. Three years in, two of the divers developed radiation sickness. Not from the deep, from their wrists. Rolex recalled forty-eight of the watches. Two were never returned.”