Part of Portugal's ongoing "O Saber" (The Knowledge) thematic series, which INCM launched to position collectible coinage around humanist and scientific values rather than purely historical commemoration — a deliberate curatorial pivot the mint made in the early 2010s. The .925 silver version runs alongside a base-metal issue struck to the same dies, the two tiers targeting different collector markets at release.
Part of Portugal's ongoing "O Saber" (The Knowledge) thematic series, which INCM launched to position collectible coinage around humanist and scientific values rather than purely historical commemoration — a deliberate curatorial pivot the mint made in the early 2010s. The .925 silver version runs alongside a base-metal issue struck to the same dies, the two tiers targeting different collector markets at release.