Device for selecting and discarding pucks (2,3) for holding bottles, comprising: - a support and travel plane extending parallel to a longitudinal direction (X-X) and to a transverse direction (Y-Y) and provided with openings having a vertical axis (Z-Z) perpendicular to said plane (X-Y) and passing through the latter; - a plurality of teeth, each housed inside a corresponding opening of said through-openings, a plurality of said teeth being arranged in the plane along a discarding line defining a routing path towards a discarding path for discarding empty pucks without bottles, and a plurality of said teeth being arranged in the plane along an exit line defining a routing path towards an exit path for outputting full pucks containing a bottle, each tooth being displaceable with a raising movement or lowering movement in the vertical direction (Z-Z) between a position retracted inside the hole so as to not interfere with the transit on the plane of a puck (2,3), preferably coplanar with the plane, and an extracted position projecting from said plane in the vertical direction (Z-Z), so as to define one or the other of said routing paths towards the exit path or discarding path, wherein the device is configured to perform selectively the raising or lowering movement of the teeth of one and/or the other exit/discarding line (LF,LS) in the vertical direction (Z-Z) so as to extract/retract them from/into the plane, in a controlled sequence and in a manner coordinated with the teeth (1F-9F;1S-9S) of the other line (LS, LF) defining the other one of said paths, so as to form a line for guiding a full puck or empty puck along the respective routing path. - a support and travel plane extending parallel to a longitudinal direction (X-X) and to a transverse direction (Y-Y) and provided with openings having a vertical axis (Z-Z) perpendicular to said plane (X-Y) and passing through the latter; - a plurality of teeth, each housed inside a corresponding opening of said through-openings, a plurality of said teeth being arranged in the plane along a discarding line defining a routing path towards a discarding path for discarding empty pucks without bottles, and a plurality of said teeth being arranged in the plane along an exit line defining a routing path towards an exit path for outputting full pucks containing a bottle, each tooth being displaceable with a raising movement or lowering movement in the vertical direction (Z-Z) between a position retracted inside the hole so as to not interfere with the transit on the plane of a puck (2,3), preferably coplanar with the plane, and an extracted position projecting from said plane in the vertical direction (Z-Z), so as to define one or the other of said routing paths towards the exit path or discarding path, wherein the device is configured to perform selectively the raising or lowering movement of the teeth of one and/or the other exit/discarding line (LF,LS) in the vertical direction (Z-Z) so as to extract/retract them from/into the plane, in a controlled sequence and in a manner coordinated with the teeth (1F-9F;1S-9S) of the other line (LS, LF) defining the other one of said paths, so as to form a line for guiding a full puck or empty puck along the respective routing path.