I also had a similar issue trying to find out about an engine. There is a telephone number on Ducati website and I spoke to a couple of different ladies who were very helpful and told me that my engine number was a 998R and matched the frame number. What they cannot tell you is the number that it should have on the plaque on the top yoke. These records were apparently destroyed in a fire. I don't suppose anyone has built up a database of numbers?
I tend to agree with you guys. The number does not matter to me but if it becomes a rebuild project, it would be nice to have it as original as possible and it would help in that regard. I shall probably make one up!
Haha! Would you like to pick a number for me - in fact if anyone else would like to pick a number, I could take an average! Very democratic!