La rhubarbe / Compagnie Liebig.

One of a series of cards (sent in sets of 6 in exchange for coupons from jars of Liebig's 'Véritable extrait de Viande Liebig' or Extractum Carnis Liebig). This one describes the rhubarb plant (rheum officinale), its cultivation and how the plant is harvested to produce a medicinal product. The colour image on the front shows its flower and its roots being dried and scraped in Tibet. Liebig cards appeared in various languages. This set also advertises Oxo beef tea.