I would really appreciate some advice I have a pen for sale on ebay that I have made some presumptions about based on an internet search and hope not to mislead in the advert but on the other hand dont want to sell myself short. the pen has a 14k nib says Parker Moderne made in canada on the side and has a cap at the base which unscrews, there is though nothing under the cap and I believe there should be a plug or something similar (no idea on terminology!) I am slightly confused as to whether this is a depression/ thrift pen or not. Is it correct some were made in Canada and some in the USA? any advise would be most welcome regards 22johnny22