Three circular diagrams, the central of which is a table in red and black, likely for determining the date of Easter. The lower diagram appears unfinished, while the upper circle contains a line drawing in brown of two Franciscan friars and an angel (Lond
Three circular diagrams, the central of which is a table in red and black, likely for determining the date of Easter. The lower diagram appears unfinished, while the upper circle contains a line drawing in brown of two Franciscan friars and an angel (Lond