A 1561 bronze commemorative medal by Gianfederico Bonzagna shows an early plan by Michelangelo, very different from his final design.[http://www.britishmuseum.org/explore/online_tours/europe/michelangelo_money_and_medals/bronze_medal_of_pius_iv.aspx].
Una medalla de bronce conmemorativa de 1561 realizada por Gianfederico Bonzagna, muestra un plano primitivo de Miguel Ángel, muy diferente de su diseño final.