On the occasion of SIAM 2019, Barid Al-Maghrib issued a special release of two postage stamps on the theme of agriculture and the environment: the bee and the lemon tree. The face value of the first was set at 3.75 dirhams and that of the second at 9 dirhams. A special feature: when rubbed, the lemon tree stamp gives off the scent of lemon. It should be noted that Barid Al-Maghrib already has several hundred postage stamps on fauna, flora and biodiversity in its collection.
