Zenith winding stem 3019 PHC male El Primero

1 Tige de remontoir Zenith /  1 Zenith winding stem

Neuf de stock / New old stock
Caliber 3019 PHC El Primero

Male part for 2 parts winding stem's system / part 404

According to Zenith catalog, this winding stem is not supposed to exists, but it does !

I really don't know which case and which kind of female part can be used with this stem.