Thanks - I just bought the 2009 Harran Cups and Saucers book yesterday. Sure some pretty collectibles in there. However, it doesn't cover all the cups and saucers I have collected over the years (i.e. the marks), but it does help more with my research. Will be going to a collector's show this weekend, so I have a better idea of what to look out for. For one thing, I never knew about the "ringing" of the cups. In the end, I end up buying because I like the looks, not for the value.
Thanks again for all your help.