see If this works.
Marvin Smith shows a triangular molded Cadiz in his book. This could also occur from slumping at the end of a cane draw. Can't say which from a picture. Richard
Thank you Richard I will have to look that book up.
Harris, Elizabeth
1982 Nueva Cadiz and Associated Beads: A New Look. Archaeological Research Booklets 17, Lancaster, Pennsylvania.
and.....
Early Sixteenth Century Glass Beads in the Spanish Colonial Trade by Marvin T. Smith; Mary Elizabeth Good