Swedish commemorative 5 Kronor silver coin issued in 1966 during the reign of King Gustaf VI Adolf, struck to mark the 100th anniversary of Sweden’s bicameral constitutional reform of 1866. The coin is catalogued as KM# 839 / Numista N# 6194. (Numista⁠) The obverse depicts the left-facing portrait of Gustaf VI Adolf, surrounded by the legend GUSTAF VI ADOLF SVERIGES KONUNG, with the date 1966 below. The reverse carries the inscription commemorating the opening of the bicameral Riksdag in 1866, framed by decorative foliage. (Numista⁠) Specifications * Country: Sweden * Denomination: 5 Kronor * Year: 1966 * Monarch: Gustaf VI Adolf * Composition: .400 silver * Weight: 18 g * Diameter: 34 mm * Thickness: approx. 2.4 mm * Type: Commemorative coin * Reference: KM# 839 * Silver content: approx. 0.2315 troy oz ASW (Ucoin⁠) The coin shows visible age-related wear, light marks and natural surface toning consistent with circulation and handling. Please study the photographs carefully as they form an integral part of the condition description. An attractive mid-20th-century Scandinavian silver commemorative with both historical and numismatic interest.