Presumption of genuineness: official gazettes, newspapers and statutorily kept documents are presumed genuine when produced from proper custody. The Court shall presume the genuineness of documents purporting to be the Official Gazette, newspapers or journals, or documents required by law to be kept, if kept substantially in the form required by law and produced from proper custody. Proper custody means the place and person with whom the document is required to be kept, but custody is not improper if the document has a legitimate origin or circumstances make that origin probable.