Hi Mike
The lot that I think you are referring to appeared to be from one collection (often photos are taken on the same background). I just didn't bother this time round as there wasn't much point....
I think we've all seen this "go one better" affair and I guess the new owner must really be committed to collecting this type of item. Most unlikely that they will ever be able to resell at even a fraction of what they've paid.
For me, it's the history of the piece and what you can learn about it through areas such as the Forum.
You, and others, have passed on info that I could never have found out by myself and for that I sincerely thank you.