1960s Blancpain Fifty Fathoms Aqua-Lung "No Radiations"

Early examples of the Fifty Fathoms utilized radium-based luminous material, standard practice in the 1950s. However, as awareness of radiation hazards grew during the Cold War, Blancpain—like many Swiss brands—transitioned to safer tritium-based luminescence. To emphasize this shift, Blancpain boldly introduced a new dial design featuring a bright red and yellow radiation symbol crossed out in black, along with the words “No Radiations”.

This now-iconic dial configuration first appeared on the Fifty Fathoms and was later carried over to the Aqua-Lung models of the 1960s. A third, exceptionally rare variation, known among collectors as the “triple-signed” dial, combined all three inscriptions—Fifty Fathoms, Aqua-Lung, and No Radiations—making it one of the most coveted configurations in Blancpain’s storied dive watch lineage.

SPECS

Stock # BLNCFFALNORAD
Brand Blancpain
Style Fifty Fathoms Aqua-Lung
Model N/A
Serial 30XXXX
Size Men's
Material Stainless Steel
Dial Glossy Black "No Radiations"
Millimeters 41
Strap 2pc Handmade Leather Strap
CASE & BRACELET

The long, broad-lugged case is exceptionally well preserved, maintaining strong factory dimensions and crisp finishing throughout, with only minimal evidence of past polishing. Light, honest wear is visible, consistent with careful use, yet no notable damage or dents are present. The original bakelite bezel remains in excellent condition, showing only minor expected aging, including faint cracking and subtle delamination, but with no structural compromises or major points of failure. The watch retains its original unsigned crown, complete with its factory nylon gasket. The case back displays all original factory engravings, which remain deep and sharply defined, with no notable wear. The watch is offered on a handmade two-piece leather strap.

DIAL & HANDS

The original glossy black triple-signed dial features embossed Blancpain and Fifty Fathoms logos, with the Aqua-Lung text printed in white script below, and the No Radiations emblem positioned just above the 6 o’clock marker. The dial remains exceptionally well preserved, displaying no notable damage and only a light, evenly dispersed speckled patina across the black lacquer surface—an attractive testament to its age. The tritium lume plots have developed a rich golden-orange patina and exhibit no signs of degradation under UV light inspection. The original tritium hands complement the dial beautifully, with the hour and seconds hands showing a slightly deeper hue to the patina. All luminous elements remain stable and consistent under UV examination

ACCESSORIES

None. The watch is keeping time, but the service history is unknown. A movement service can be provided upon request.

Dimensions: 41mm

Box, Papers, etc.: Watch Only

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