Landeron yoke + yoke spring cal. 48 51 148 149 151 189 248 349 / part 435 + 440

Landeron yoke + yoke spring , part 435 + 440 (bascule + ressort de bascule)

It fits all following calibers :

48 51 54 55 82 85 86 148 149 151 152 153 154 155 180 181 185 186 187 189 248 254 349

Pre-owned / Pre-used