Ressort de barillet. haut 2.30 ou 2.40 , acier bleu époque 1920, pièce 15€, préciser le N°.

N°425, 2.30, 8.5, 0.10, 23, tr;  N°426, 2.30, 9, 0.10, 24, cr;  N°427, 2.3, 11, 0.13, 38, tr;  N°428, 2.30, 12, 0.165, 46, tr;                                   N°429, 2.30, 13, 0.165, 42, tr;  N430, 2.3, 14, 0.18, 42, cr;  N°431, 2.30, 16, 0.21, 48, cr;  N°432, 2.30, 18, 0.225, 67, neutre;                     N°432,bis, 2.30, 19, 0.225, 68, tr;  N°433, 2.30, 20, 0.23, 68, neutre;  N°434, 2.30, 21, 0.23, 71, tr;  N°435, 2.30, 22, 0.27, 75, tr;                N°435bis, 2.30, 23, 0.27, 72, cr; 

 N°436, 2.20, 8.50, 0.10, 23, tr;  N°437, 2.40, 10, 0.12, 35, tr;  N°438, 2.40, 10.5, 0.13, 35, tr;  N°439, 2.40, 12, 0.13, 38, tr;                            N°440, 2.40, 13, 0.16, 44, tr;  N°441, 2.40, 14, 0.18, 45, rt ou cr;  N°442, 2.40, 15, 0.20, 46, cr;  N°443, 2.40, 16.5, 0.21, 47, cr;                       N°444, 24, 18, 0.22, 66, neutre;  N°445, 2.40, 19, 0.225, 65, tr;  N°446, 2.40, 20, 0.22, 85, tr;  N°447, 2.40, 21, 0.275, 82, tr;                          N°448, 2.40, 24, 0.275, 82, tr;