The machine running the "ornamental perforations"; the decorations can be combined in a row of round holes, or diamond or star shaped; on bands, for example, applied to the front side of a belt, or to form a motif along the edge of a part of a handbag, so as to provide a variety for a collection by embellishing and diversifying models. A line of holes is performed at preset intervals, at a variable distance, obtained with tiny die-cutters incorporated into block-plates; the leather pieces being drive and fed continuously.