(GENÈVE SPORT - ARDOISE ref. 135.070), circa 1970 Steel watch with horn handles and waterproof screwed basin back (signed and numbered). Electric slate gray dial (patina in the center) with large central second hand, applied indexes, tritium point and luminescent skeleton hands. Vintage rubber strap and an added leather strap. Movement: Hand-wound mechanical caliber signed OMEGA / 601 Swiss. Diam. 35mm. Condition: Fine (Plumier brought back from the period).