yes, the print was made by contact through a black paper mask to give a white border
the neg was firstly oiled by rubbing baby oil into the back of the paper, this daramatically shortens exposure time, increases contrast and in some cases renders more of the paper texture
at first i was really careful to protect the emulsion side, and though i used quite a lot of oil the neg still looked patchy, after several tries i've found a little oil rubbed in with a cotton pad, or something like an ink dabber as would be used in print making, and then left alone for perhaps an hour, the oil will spread through the paper fibres and even itself out, any excess can be easily wiped away
the negs are later stored in a plastic A4 sleeve and some that are now 2 years old don't seem to have dried out but they also don't seem to be particularly oily