psql -c "\copy table to test.csv with CSV" - french character is wrong

Hello,

Tried to run:
    psql -h db1 -U u1   -d d1 -c "\copy t1 to test.csv with CSV"

Problem:
    French characters are not shown correctly.


Tried:
    psql -h db1 -U u1   -d d1 -c "\copy t1 to test.csv with CSV ENCODING 
'UTF8' "
    Got: \copy: parse error at "encoding"

Can you help how to copy french characters correctly into csv file please?

Thanks a lot.
-- 
. French characters show correctly in t1
. Client/server encoding: UTF8
. Cannot use super user: postgre
. Version 8.3.18