A mould (12) for producing, from a blank (3), a container (2) having a bottom (6) provided with a seat (8), the mould (12) including: —a wall (14) delimiting a cavity (17) and, beyond the cavity (17), a hollow recess (21) opening into the cavity (17) via an opening (20); —a mould bottom (16) that is movable relative to the wall (14), the bottom having an upper surface (27) defining a seat surface (28) having the footprint of the seat (8) of the container (2). In this mould: —the wall (14) has a counterbore (24) that defines, at the top, the hollow recess (21) and that extends perpendicular to and around the opening (20), substantially parallel to the central axis (X); —the upper surface (27) defines a peripheral face (30) that extends flush with the counterbore (24).