>So what was the more important, the number or the rosette?<

Well the number must have been fairly important in that I've only ever seen one example with five points and dozens with seven and I've not found a single reference to any other number except that supplied by Katherine. They were very deliberately drawing a seven pointed shape which is what makes the five pointed one more interesting.

It's the same with an djed pillar with five instead of four horizontal lines which I've also photographed and which intrigues me.

Jon