Antoninianus Silver Coin - Antoninianus Silver Coin

…Thus, although the denarius played a major role in the circulation of the currency, the discrepancy between its nominal value and its real value led to the establishment of a compulsory exchange relationship between the aureus and the denarius, and the state was forced to maintain this relationship until the middle of the 3rd century. From the beginning of the 3rd century, the deterioration of the value of the denarius became even more drastic, and the weight and quality of the antoninianus, which replaced the denarius, also gradually decreased, leading to unprecedented inflation in the latter half of the 3rd century, and in addition to the political and military turmoil of the period, there was a severe economic crisis. For this reason, Emperor Constantine, following Emperor Diocletian, carried out a monetary reform, and in 312 the solidus was created. …

*Some of the terminology explanations that refer to the "Antoninianus Silver Coin" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…このため，デナリウス銀貨は流通手段の主役を果たしながらも，名目価値と実質価値との乖離（かいり）によって，アウレウス金貨とデナリウス銀貨との間には強制的な交換関係が設定されるに至り，国家は3世紀中葉までこの関係を維持するように余儀なくされた。3世紀初頭から，デナリウス銀貨の品位改悪はさらに著しくなり，デナリウス銀貨に代わるアントニニアヌス銀貨も漸次的に量目･品位を下落させたので，3世紀後半には未曾有のインフレーションに陥り，この時期の政治的･軍事的混乱に加えて，経済危機が著しかった。このため，ディオクレティアヌス帝に続いて，コンスタンティヌス帝による通貨改革が断行され，312年ソリドゥス金貨が創設された。…

※「アントニニアヌス銀貨」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報