*** 1 Tissot crown with thread inside to be screwed on the case.

New old stock genuine Tissot crown ref C9987 / T350006391

The price is for 1 crown

Diametre / Diameter : 4.88 mm

Epaisseur / Thickness : 3.00 mm

Filetage / Thread 0.90 mm

Diamètres du tube interne / Diameters tube : 1.56mm / 1.14mm

Longueur tube interne / Lenght of the tube : 2.70mm

Diamètre approximatif du tube fileté sur le boitier de montre / Approximate diameter of the case tube : 3.5 mm ( see picture)