Here's an interesting page about the history of Kodak film numbers: http://www.bvipirate.com/Kodak/FilmHist.html I did not know that the numbering scheme was largely done after the fact, starting in 1908, and then only put into price lists in 1913. (Before then, you would order film by using the camera model.) It also mentions Advantix, although nothing about Disc... --- Rollei List - Post to rollei_list@xxxxxxxxxxxxx - Subscribe at rollei_list-request@xxxxxxxxxxxxx with 'subscribe' in the subject field OR by logging into www.freelists.org - Unsubscribe at rollei_list-request@xxxxxxxxxxxxx with 'unsubscribe' in the subject field OR by logging into www.freelists.org - Online, searchable archives are available at //www.freelists.org/archives/rollei_list