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It is drawn on parchment by hand and coloured. It is composed of ten sections or panels, the whole forming a rectangle measuring 2.25 by 1.15 metres. This undated map was one of the primary sources used to make the Waldseemüller map in 1507. On the basis of this it is mostly dated to c. 1506. The map is signed with "Nicolay de Caveri Januensis". It was probably either made in Lisbon by the Genoese Canveri, or copied by him in Genoa from a Portuguese map very similar to the Cantino map, if not the Cantino map itself. The Cantino map was in Genoa toward the end of 1502 and presumably the following few years, when Caveri could have used it as the basis of his map.
Sanz (1961)[page needed] argued that the east coast of North America is drawn with surprising accuracy, especially "when we consider the general belief that the Europeans neither saw nor set foot on the beaches in the southern states of the present-day U.S.A. before Ponce de León arrived there in 1512 or 1513, Giovanni da Verrazzano in 1523, Lucas Vásquez de Ayllón in 1520-1524 or Esteban Gómez in 1525."
- Carlos Sanz, Mapas antiguos del mundo, Madrid, 1961.