Investor observes extraordinary art, close up (10)

I believe the answer is:

speculator

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'investor observes' is the definition.
I can't tell whether this defines the answer.

'extraordinary art close up' is the wordplay.
'extraordinary' is an anagram indicator.
'art'+'close'+'up'='artcloseup'
'artcloseup' with letters rearranged gives 'SPECULATOR'.

Can you help me to learn more?

(Other definitions for speculator that I've seen before include "better" , "Investor in stocks, etc" , "One gambling on the stock exchange" , "Stock market gambler" .)

I've seen this clue in The Irish Times.

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