Patent ID: 8740451

Claim:
A watch case comprising: a middle ( 3 ), a first tube ( 1 ) provided with first indexing elements ( 1 a ), a control crown (C) including: a cap ( 4 ) having a distinctive sign (S) on a front face ( 4 ′), and a bushing ( 5 ) intended to be connected to the movement of the watch, a second tube ( 2 ) adapted to be fastened to the middle ( 3 ) and to receive the bushing ( 5 ), the control crown (C) and the first tube ( 1 ) including respective screwing elements ( 1 b , 4 b ) for screwing them together; wherein: second indexing elements ( 3 a , 3 a ′, 3 a ″) fastened to the middle ( 3 ) are provided to cooperate with the first indexing elements ( 1 a ) of the first tube ( 1 ), and the first tube ( 1 ) and the second tube ( 2 ) are conformed so that fastening the second tube ( 2 ) to the middle ( 3 ) ensures axial immobilization of the first tube ( 1 ) relative to the middle ( 3 ).