Abstract: The invention concerns a method for assembling a screwed crown on a watch case, characterized in that it includes the following steps: providing a crown with an inner threading the position of which is set with respect to the logo arranged on the front face of the crown; providing an intermediate tube including two threaded sections; mounting said intermediate tube in a smooth through hole passing through the case and wedging it on an assembling jig to arrange the thread start of the tube intended to accommodate the internal screw thread of the crown in an angular position such that when the crown is screwed as far as possible onto the tube said logo or said mark is located in a determined position; providing a nut and immobilizing the tube in said angular position.