Abstract: The invention relates to a watch-making or clock-making component comprising an amorphous metal alloy corresponding to the formula: FeaCobNicNbdVeBfTag, in which: 0<a<70; 0<b<70; 8<c<60; 1<d<19; 1<e<10; 12<f<25; 0<g<5; with 20<a+b<70; 50<a+b+c<90; 5<d+e<20; and a+b+c+d+e+f+g=100. This watch-making or clock-making component may be a spring, such as a barrel spring.

Abstract: The invention relates to an amorphous metal alloy which may be used in the field of mechanical applications, in particular as a spring. This amorphous metal alloy corresponds to the formula FeaCObNicNbdVeBfTag in which: 0?a?70; 0?b?70; 8<c?60; 1?d?19; 1?e<?10; 12?f?25; 0?g?5; with 20?a+b?70; 50?a+b+c?90; 5?d+e?20; and a+b+c+d+e+f+g=100.

Abstract: A watch case comprising: a middle (3), a first tube (1) provided with first indexing elements (1a), a control crown (C) including: a cap (4) having a distinctive sign (S) on a front face (4?), and a bush (5) intended to be connected to the movement of the watch, a second tube (2) adapted to be fastened to the middle (3) and to receive the bush (5), the control crown (C) and the first tube (1) including respective screwing elements (1b,4b) for screwing them together. Second indexing elements (3a,3a?,3a?) fastened to the middle (3) are provided to cooperate with the first indexing elements (1a) of the first tube (1). The first tube (1) and the second tube (2) are conformed so that fastening the second tube (2) to the middle (3) ensures axial immobilization of the first tube (1) relative to the middle (3).