Vintage double-sided school educational poster Numbers, measurements and conversion 1965

Typical vintage school poster from the 60s offering educational tables for numbering, measurements and conversions. Very well done! I learned things there myself: did you know the myriameter. I don't, so 1 mam = 10 km! Functional therefore, original, but also very aesthetic with this beautiful black background with these very complementary yellow and red. Presence of metal rings to hang it. Height 93.5 cm, length 126 cm, weight 490 g. Please look carefully at the photos, they aim to show the general condition and possible defects as best as possible.

Ref. : JDWCFE8X