M201 - Oil can
Most Hotchkiss bodies include the threaded holes used for mounting a WW2 style oil can bracket. The oil can is identical to the WW2 design but was again stamped 'armée Française'. These may or may not have been fitted at the factory in the case of early examples but were certainly available as an accessory. I have not seen one fitted to later 24 volt M201s or any that have been rebuilt.
It is my guess that with the advent of better lubricants the rather quaint concept of the oil can became obsolete.