Alfredo Binda toe clip straps were always one of the preferred brands to use with 1970s vintage Campagnolo road or track pedals.  They have very robust and long lasting leather (I still use a set I originally got in 1973).  They came in a variety of colors incl. red, yellow, white, black and blue (shown here). Some of the straps are embossed with a bicycle manufacturer's name.Invariably the manufacturer's names are of Italian origin. Although with time the chrome on the clip perished. However the design incorporated a hard plastic roller which was very durable. Earlier models had brass buckle rollers.