This is a collectible 5-euro coin series issued by the Bank of Greece, titled "Endemic Flora of Greece." The series focuses on rare and protected plants that grow exclusively on Greek territory. Summary: Material and Quality: The coins are made of silver (33.3% purity) in "proof-like" quality, which gives them a high-gloss finish. Visuals: They are characterized by colorized floral designs on the obverse side, and each coin is housed in its original illustrated blister card. Collector Value: They have a very low mintage (typically only 5,000 pieces per design), making them highly sought after by numismatists, with their value often increasing over time. Set Content: Your photo specifically shows the 2020 (Iris), 2021 (Campanula), 2022 (Paeonia), and 2023 (Fritillaria) editions. Technical Specifications (Endemic Flora of Greece) Feature Details Denomination 5 Euro Metal Composition Silver (Ag) 33.3% (Billon) Weight 17.00 grams Diameter 31.00 mm Quality Proof-like Edge Plain (Smooth) Mintage 5,000 pieces (per design) Designer Maria Antonatou List of Your Specific Editions: 2020: Iris hellenica Focus: A rare iris found primarily in the mountains of the northern Peloponnese. 2021: Campanula saxatilis Focus: A bellflower endemic to the island of Crete, typically growing in rocky crevices. 2022: Paeonia parnassica Focus: A unique peony species with deep red petals, native to Mounts Parnassos and Elikonas. 2023: Fritillaria davisii Focus: A distinctive flowering plant from the lily family, specifically from the Mani peninsula.