I'm glad you are going to carry the torch on this project... I was pondering undertaking this myself, but I am such a non-computer geek, that it's laughable...
I am gathering the pertinent info from my two C-19 machines, and will look forward to your new thread.

Frank
fran604g wrote:Hi folks,
I think this is a fascinating post, and in response to pughphonos suggestion that someone start a database in regards to the C250/C19 Diamond Disc Phonographs, I've decided to take the initiative and start a spreadsheet and compile pertinent information on the differences and commonalities observed between the two. It is my hope that, through serialisation and original documentation, I can establish dates when significant changes were made along the manufacturing timeline of both the C250 and the C19 over their respective lifetimes.
I will start my own post with my questions, and I hope that everyone here with either machine is gracious enough to help me out with the data gathering.
This is my first large scale historical project, so I need and appreciate your help.
Thank you,
Fran