FHF mainspring 65 65-4 automatic

Mainspring for FHF 65  and 65-4 automatic (with attached bridle / avec bride glissante)

Thickness is 0.11mm, as it should be (there was a mistake in the printing of the envelope on pics)

Not for old FHF 65 manual wind movement, only for automatic / Ne convient pas au vieux mouvement manuel FHF 65, seulement  pour le modèle automatic

Ressort de barillet / Zugfeder

New old stock / neuf de stock