Longines winding stem 501 503 male + female / part 404

Tige de remontoir mâle + femelle Longines 501 / split male + female winding stem Longines

Neuf de stock / New old stock (minor signs of age, see pics)

1 set of split stem for calibers 501 and 503 male + female part 404

Total length : 15 mm

Thread 90