Timepiece or piece of jewellery

A timepiece or piece of jewelry comprising:

• a structure which includes at least one set of horns, and at least a first slender bar, which is fixed or removable with respect to first points of attachment to a first set of horns,
• the first slender bar is arranged to removably receive a snap-hook fixed to a first end of a first strand of said timepiece or piece of jewelry,
• said snap-hook comprising, a hook including a curved beak portion arranged to enclose said first slender bar on part of its circumference, and a retaining latch which is elastic or elastically fixed to said hook and is configured to close an eyelet opening of the snap-hook, and arranged to allow insertion of said first slender bar into said eyelet opening of said snap-hook by pressure in a plane substantially perpendicular to an axis of said first slender bar, and to prevent removal thereof from said snap-hook without user manipulation,
• wherein said first slender bar includes, at a distance from each of said first points of attachment to said structure, a notch having two sides arranged to limit lateral travel of said curved beak portion, and to limit angular travel of said snap-hook with respect to said first slender bar, in order to prevent any contact between said snap-hook and said first set of horns to which said first slender bar is fixed.