|Note_en=First page, cover. Bulletin N. 20. Advertise the ''[[Gold Gift]]'' assortments for jewelers and the new standard version of the [Bi-flux]] ink. {{OnBack|File:1958-03-Aurora-Bullettin-p02.jpg}} | |Note_en=First page, cover. Bulletin N. 20. Advertise the ''[[Gold Gift]]'' assortments for jewelers and the new standard version of the [Bi-flux]] ink. {{OnBack|File:1958-03-Aurora-Bullettin-p02.jpg}} |