In 1945, the British Ministry of Supply commissioned what would become one of the most legendary military watches ever created.

Only twelve Swiss watchmakers were selected to produce a timepiece built to uncompromising military specifications: a matte black dial, luminous Arabic numerals, chronometer-grade precision, a shatter-resistant crystal, and a waterproof case. Every watch was engraved W.W.W. — Watch, Wristlet, Waterproof — together with the British Army's iconic Broad Arrow.

History would later remember these twelve watches as the legendary "Dirty Dozen."

But among these twelve icons, one name has always stood above the rest:

GRANA

Not because it was the largest manufacturer—but because it became the rarest.

Experts estimate that only 1,000 to 1,500 Grana W.W.W. watches were ever produced, compared to approximately 145,000 watches delivered by all twelve manufacturers combined. As one of the smallest Swiss manufacturers of the era, Grana's production was exceptionally limited, making it the ultimate prize for military watch collectors worldwide.

Today, an original Grana is regarded as the holy grail of the Dirty Dozen—the watch that completes a collection and embodies the very essence of wartime Swiss watchmaking.

More than a military timepiece, it is a symbol of authenticity, rarity, and enduring Swiss craftsmanship.