2022-04-112022-04-111956https://hdl.handle.net/2152.3/11398One 10 ore and one 30 ore stamp of chemist Jöns Jakob Berzelius from Sweden. 10f+3f stamp of chemist Joseph Gay-Lussac from France. 25 lira stamp of physicist Amadeo Avogadro from Italy.Four Stamps.Stamp collectingPostage-stamp albumsBerzelius, Jöns Jakobs, friherre, 1779-1848Gay-Lussac, Joseph Louis, 1778-1850Avogadro, Amedeo, 1776-1856SwedenFranceItaly