More keen on swapping francs for yen over there (6)
I believe the answer is:
yonder
'over there' is the definition.
(archaic preposition meaning 'over there')
'more keen on swapping francs for yen' is the wordplay.
I cannot really understand how this works, but
'on' is found in the answer.
'yen' could be 'y' (resembles the symbol for the currency of Japan) and 'y' is located in the answer.
The remaining letters 'der' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for yonder that I've seen before include "Over there, a long time ago" , "Over there, of old." , "Distant but within sight" , "At a distance but in sight" , "Over there, somewhat archaic" .)