Issued in 1983 to mark the 100th anniversary of the catastrophic Krakatau eruption of 27 August 1883, this commemorative medal was struck by Perum Percetakan Uang RI (PERURI), Indonesia's official state mint and security printing authority.

Obverse: Dramatic depiction of Mount Krakatau mid-eruption, inscribed "Centenary of Krakatau Eruption 1883–1983."

Reverse: Relief map of the Indonesian archipelago — Sumatra, Jawa, and Kalimantan — centred on the Sunda Strait, the epicentre of the eruption, inscribed "100 Years Krakatau Eruption — August 27, 1883."

Edge: Inscribed PERURI.

• Material: Copper with colouring (tembaga dengan pewarnaan)
• Diameter: 35 mm
• Thickness: 2 mm
• Weight: ±17 g
• Issuer: Perum Percetakan Uang RI (PERURI), Indonesia
• Year: 1983

A historically significant piece commemorating one of the deadliest volcanic events in recorded history. Ideal for collectors of Indonesian numismatica, volcanic history memorabilia, and Southeast Asian commemorative medals.