2021Europa - Endangered National Wildlife - The Freshwater Pearl Mussel - Set

The stamp featuring the freshwater pearl mussel has a face value of € 1.00, which corresponds to the postage of letter-post items in the weight class up to 20 grams within Latvia, while the face value of the stamp depicting the black stork is € 1.27, covering the postage of letter-post items in the weight class from 21 to 100 grams within Latvia. The print run of each individual stamp is 50,000 copies.