Signs up mountain eccentric figures should support (8)
I believe the answer is:
placards
'signs' is the definition.
(I know this)
'up mountain eccentric figures should support' is the wordplay.
I cannot really understand how this works, but
'eccentric' could be 'card' (I've seen this in other clues) and 'card' is present in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for placards that I've seen before include "publicity" , "Posters or notices for display" , "Stiff cards bearing notices for display" , "Stiff cards carried or displayed in public" .)