For  Lauzon, the best known variety of the Columbian serie is the "broken hat" and he said that it´s probably the result of the weakening of the metal on the transfer roll from a small crack to the final big gash illustrated. The "broken frame line" was also caused by a defective transfer roll and occurs near the base outer right vertical frame line and extends for about one-sight of an inch. Another small transfer break which is known in two different stages occurs on the botton line in the lower right corner of the 2c stamp.