Fernando - possibly the fact that you live in Brazil could mean the car was originally delivered there, or close-by, and that could well mean that it was delivered with the oil-bath filter which, as I understand it, was delivered to countries which at the time did not have the best of roads (lots of dust, sand etc) so the filter had to be more thorough.
Cees ("Case") Klumper in Amsterdam
'69 white 280 SL automatic