Ressort de barillet. haut 1.50 à 1.55, acier bleu époque 1920, pièce 15€, préciser le N°.

N°240, 1.50, 6, 0.07, 17.5, cr;  N°241, 1.50, 7.50, 0.07, 18, cr;  N°242, 1.50, 8, 0.095, 24, cr;  N°243, 1.50, 0.13, 10, 24, tr;                                        N°244, 1.50, 10.5, 0.12, 35, tr;  N°245, 1.50, 10.5, 0.12, 35, cr;  N°246, 1.50, 11, 0.135, 34, cr;  N°247, 1.50, 11.5, 0.13, 36, cr;                        N°248, 1.50, 12, 0.13, 40, tr;  N°249, 1.50, 13, 0.16, 42, tr;  N°250, 1.50, 13.5, 0.175, 42, cr;  N°251, 1.50, 14, 0.175, 45, tr;                            N°252, 1.50, 14.50, 0.18, 43, cr;  N°253, 1.50, 16, 0.20, 48, cr;  N°254, 1.50, 18, 0.22, 53, tr;  N°255, 1.50, 18.50, 0.23, 54, tr;                          N°265, 1.50, 19, 0.24, 68, neutre;  N°257, 1.50, 20, 0.25, 68, tr;  N°258, 1.55, 5.50, 0.07, 16, cr;  N°259, 1.55, 7, 0.08, 20, cr;                          N°260, 1.55, 8, 0.10, 22, cr;  N°261, 1.55, 8.50, , 0.10, 24, cr;  N°262, 1.55, 9, 0.11, 25, cr;  N°263, 1.55, 10, 0.13, 30, cr;                                N°264, 1.55, 10, 0.13, 30, tr;  N°265, 1.55, 10.50, 0.13, 33, cr;  N°266, 1.55, 12, 0.135, 38, cr;  N°267, 1.55, 12.50, 0.165, 39, cr;                     N°268, 1.55, 12.50, 0.165, 39, tr;  N°269, 1.55, 13, 0.16, 39, cr;  N°270, 1.55, 13.7, 0.185, 42, cr;  N°271, 1.55, 14, 0.18, 43, cr;                        N°272, 1.55, 15, 0.18, 44, cr;  N°273, 1.55, 20, 0.24, 68, neutre;