Rob, I have a Tiffen bay 1 to series V adapter with part number 522 which is very well made. Ednalite and Tiffen offered all manner of adapters with model numbers rather than sizing them for easy identification the way Kodak did. I imagine you could use a step-up adapter to make it a series VI if that is your desire or cobble something using a bay filter ring, the right Series VI adapter and some epoxy. I recently made a lens hood for a Leica lens using a clamp type filter ring and a plastic vitamin bottle. Lined the inside with black felt and it does the job. The Leica filter ring came from KEH in bargain or ugly condition for around $2. Keep it under your hat but KEH is a wonderful resource for old and odd photographic schmedna and the stuff is usually priced right. Health, Peace Lance Selma, NC 27576 ~~~~~~~~~~~~~~~~~~~~~ In a message dated 8/7/2009 6:00:18 P.M. Eastern Daylight Time, 54moggie@xxxxxxxxxxxxxx writes: I've never seen a Bay I to Series VI adaptor on eBay. I have seen Bay II to Series VI. Does anyone know if a Bay I to Series VI exists? Thanks Rob --- Rollei List