first age of the world when mankind lived in innocence happiness (Greek and Roman Mythology); flourishing period (usually of a people or nation)
(Of Swordplay) The peak of the sword's evolution from the introduction of the rapier in the sixteenth century to the swords eventual demise in the eighteenth
A golden age is a period of time during which a very high level of achievement is reached in a particular field of activity, especially in art or literature. You grew up in the golden age of American children's books
(classical mythology) the first and best age of the world, a time of ideal happiness, prosperity, and innocence; by extension, any flourishing and outstanding period any period (sometimes imaginary) of great peace and prosperity and happiness a time period when some activity or skill was at its peak; "it was the golden age of cinema