Belt buckle and belt comprising such a buckle

A belt buckle comprising a frame (1) and an ornamental plate (2) disposed in an internal space (11) defined by said frame (1),

• the frame (1) comprising an open upper face (13) and an open lower face (14),
• the ornamental plate (2) comprising a first face (21) and a second face (22) which is an opposite face to the first face (21),
• wherein the ornamental plate (2) is connected to the frame (1) by a pivot (3) enabling said ornamental plate (2) to be turned over in the frame (1), and wherein the buckle comprises locking means configured to hold the ornamental plate (2) in position relative to the frame (1) in a first position exposing the first face (21) of the ornamental plate (2) through the open upper face (13) of the frame (1) and in a second position exposing the second face (22) of the ornamental plate (2) through said open upper face (13) of the frame (1),
• wherein the locking means comprise:
• a first member projecting on an edge surface (23) of the ornamental plate (2), and
• a second member projecting on an interior rim (12) of the frame (1) delimiting the interior space (11) of the frame (1);
• said first member and second member being configured to mechanically lock relative to each other.