Money group making seedy investment? (6)
I believe the answer is:
peseta
'money' is the definition.
(I've seen this before)
'group making seedy investment?' is the wordplay.
I cannot really see how this works, but
'group' could be 'set' (both can mean a collection) and 'set' is found in the answer.
The remaining letters 'pea' is a valid word which might be clued in a way I don't see.
This may be the basis of clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for peseta that I've seen before include "Spain's former currency unit" , "Old Spanish coin" , "Obsolete coin" , "Old tender" , "Get ready once for Spain" .)