International Year of the Periodic Table 2019
Now showing: Portugal - Postage stamps - 2019 - International Year of the Periodic Table - 1 stamps.
2019
International Year of the Periodic Table
24. July WM: None Design: Atelier Design&etc / Elizabete Fonseca Engraving: BPost Philately & Stamps Printing. Perforation: 12¼ x 12
![[International Year of the Periodic Table, type ]](https://www.stampworld.com/media/catalogue/Portugal/Postage-stamps/4553-b.jpg)
