200 Euro Autogyro and Juan de la Cierva

表面の説明	ログインして詳細を見る
表面の文字体系	ログインして詳細を見る
表面の銘文	ログインして詳細を見る
裏面の説明	Right-facing bust of Juan de la Cierva, the Spanish aviation pioneer, depicted wearing spectacles and an aviator's leather helmet with goggles. A relief representation of an autogyro is positioned to the right of the portrait in the field. The legend JUAN DE LA CIERVA arcs across the upper field, with the date 1997 below.
裏面の文字体系	Latin
裏面の銘文	ログインして詳細を見る
縁	ログインして詳細を見る
鋳造所	ログインして詳細を見る
鋳造数	ログインして詳細を見る
追加情報	Juan de la Cierva developed the autogyro through a series of failures as much as successes — his first three prototypes crashed due to asymmetric lift across the rotor disc, a problem he solved in 1922 with the invention of the articulated rotor head, which also became foundational to all subsequent helicopter development. The C.4, flown that same year at Getafe, completed the first successful autogyro flight in history. This coin was issued as part of Spain's ongoing commemorative gold program of the 1990s, which used the 200 euro denomination — denominated in euros two years before Spain formally adopted the currency.

こちらもおすすめ