The invention relates to a bezel (1) for detachably fastened to a tool of a stamping press for centering a sheet blank on said tool, comprising a first part (11) which is fixed and a second part (12) which is removable, the second portion (12) having a support wall (121) for the sheet blank which is adapted to exert a restoring force on the sheet blank in a bearing direction Da, said bezel (1) being characterized in that the second portion (12) comprises a curved flat blade, elastically deformable such as a leaf spring.
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