Crossword Genius

Fabulous time when we were so successful at the Olympics? (3,2,4)

Ross

I believe the answer is:

age of gold

I'm a little stuck... Click here to teach me more about this clue!

'we were so successful at the olympics?' is the definition.
I know nothing about this answer so I cannot judge whether it can be defined by this definition.

'fabulous time when' is the wordplay.
I cannot really see how this works, but
'time' could be 'old' (old is a kind of time) and 'old' is found within the answer.
'when' could be 'e' (I've seen this in other clues) and 'e' is located in the answer.
This may be the basis of clue (or it may be nonsense).

Can you help me to learn more?

I've seen this clue in The Guardian.
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