For those who have not seen it, yet, "Russia in color, a century ago": <http://www.boston.com/bigpicture/2010/08/russia_in_color_a_century_ago.html> And an interesting detail for our Zeiss Ikon heads, from a comment: <snip> 669 Great pictures, many thanks! My first serious camera in 1958 camera was a used 35mm 1932 Zeiss Contax Model 1. A unique feature that made it unique was that its wind-up/film advance knob pointed forward, parallel to the lens barrel, instead of sitting on top of the camera. It took me many years to understand the reason for that. One of the numerous Contax 1 accesories available was a disk divided into three sectors, each of which carried one of the color filters used for this color system! The disk was mounted on this knob, and each time the film was advanced it rotated 1//3 of a turn - automatically placing one of the filters in front of the lens. This allowed to take the three required pictures in a relatively quick sequence, minimizing differences between the three corresponding images. This color system probably was not very popular in those days, and Zeiss chose to move the knob to the top on its later Contax models 2 & 3 beginning in 1936, which made the 3-filter disk unusable on them. Posted by Bernard Wassertzug August 24, 2010 11:17 PM </snip> HAND, hauke --- 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