Don Bosco used to recall that this bell would summon all the surrounding young people for the holidays with an effectiveness equal to that of a sermon.
In 1853, however, this bell was too small for the new bell tower of the church of San Francesco de Sales and so Count Cays gave another, which was larger and more effective for its clarity of sound.
In 1929, the two bells were fused together.
Source: Boletín Salesiano