I'm a little confused after reading some of the material on Ben's site. The R-1, R2, C-1 and C-2 were introduced in Sept. or Oct. of 1928. Was there some kind of access to Splitdorf's patents so these machines could be manufactured and put on the market? The first C-2 I owned had all the original paperwork with it including the warranty card completely filled in with the date of 12/15/28, but the original owner never mailed it. Also some Service Supplements are dated Jan. 17, 1929 concerning problems associated with those models, hardly enough time for problems to be discovered unless they had come out in 1928. I understand that the final sale of Splitdorf did not occur until 1929. These above mentioned models used Splitdorf electronics with possibley the design help of the Edison staff or Theodore himself, since it was his own clever design for the pickup that played DD as well as the Needle cuts. Did I miss something in reading and understanding these dates? On the top of the scratch filters in both my C-1 and C-2 there is a date written in red grease pencil OKing that particular motor board and pickup unit. The C-2 was dated 1928 and the C-1, Jan. 1929. BTW, those color ads are spectacular and I'd like to publicly thank Ben for making those and all the other information available to those of us that are fascinated by the last products of Edison. Best, Bruce