Urge observation of newspaper announcement, perhaps (5,6)

'newspaper announcement perhaps' is the definition.
I don't know anything about this answer so I cannot tell whether this works.

'urge observation' is the wordplay.
I cannot quite understand how this works, but
'urge' could be 'press' (synonyms) and 'press' is present in the answer.
'observation' could be 'notice' (synonyms) and 'notice' is found in the answer.
No letters remain.
This may be the basis of the clue (or it may be nonsense).

'of' acts as a link.

Can you help me to learn more?