May be of interest to some, the variations of the Crown logo found on three cases I picked up as part of a batch experimental/test cartridges I picked up a few months back (these were the only three in the batch for this maker) so I was a bit surprised to see three different versions of the logo (but this could be the reason they were there!).
First is on a plain orange tube with short brass;
Second is also a plain orange tube with short brass
Shame the outer ring of the primer cup has stress fractured off and is missing.
Third is a plain pale red tube with short brass
(Slightly blurred the picture, sorry about that).