Mold for the forming by stretch blow-molding of a container from a plastic blank, this container comprising a body, which extends along a main axis and is closed by a bottom defining an annular base that extends in a resting plane substantially perpendicular to the main axis, the bottom having, starting from the base and in the direction of the main axis, a concave arch pointing towards the inside of the container, a central bulb that protrudes from the arch towards the inside of the container, and a slug that protrudes at the vertex of the bulb towards the outside of the container, this mold comprising: - a mold block, an inner wall of which defines an at least partial shape of the body of the container, the inner wall extending along a main axis corresponding to the main axis of the container; - a mold base having an upper molding face that defines an at least partial shape of the bottom of the container, the mold base having: ∘ a peripheral face that complements the arch and extends sloping from near the main axis to an annular groove that complements the base, ∘ a central dome that complements the bulb and protrudes from the peripheral face towards the inside of the mold, and ∘ a central well that complements the slug, formed in the dome and extending along a truncated conical side wall from a top edge of the dome having a top diameter, i.e. a top radius with a value D2/2, to a bottom having a bottom diameter, i.e. a bottom radius with a value D1/2, and the value of the bottom diameter being smaller than the value of the top diameter; - a stretching rod that ends in a distal end and is mounted sliding relative to the mold block between a top position in which the distal end is separated from the mold base, and a bottom position in which the distal end is near the mold base; this mold being characterized in that, in the bottom position of the rod, its distal end is separated from the side wall of the central well by a distance smaller than a distance that separates it from the bottom of the well. - a mold block, an inner wall of which defines an at least partial shape of the body of the container, the inner wall extending along a main axis corresponding to the main axis of the container; - a mold base having an upper molding face that defines an at least partial shape of the bottom of the container, the mold base having: ∘ a peripheral face that complements the arch and extends sloping from near the main axis to an annular groove that complements the base, ∘ a central dome that complements the bulb and protrudes from the peripheral face towards the inside of the mold, and ∘ a central well that complements the slug, formed in the dome and extending along a truncated conical side wall from a top edge of the dome having a top diameter, i.e. a top radius with a value D2/2, to a bottom having a bottom diameter, i.e. a bottom radius with a value D1/2, and the value of the bottom diameter being smaller than the value of the top diameter; ∘ a peripheral face that complements the arch and extends sloping from near the main axis to an annular groove that complements the base, ∘ a central dome that complements the bulb and protrudes from the peripheral face towards the inside of the mold, and ∘ a central well that complements the slug, formed in the dome and extending along a truncated conical side wall from a top edge of the dome having a top diameter, i.e. a top radius with a value D2/2, to a bottom having a bottom diameter, i.e. a bottom radius with a value D1/2, and the value of the bottom diameter being smaller than the value of the top diameter; - a stretching rod that ends in a distal end and is mounted sliding relative to the mold block between a top position in which the distal end is separated from the mold base, and a bottom position in which the distal end is near the mold base;