Matching planet labels

[Koen G]

I think in many if not all of Velinska's examples, the four ticks in a square are just a quick and easy way to make a quatrefoil in the negative space. This might also be the case in the VM, though the ticks are more like little circles and the supposed quatrefoil is wonky.

Apart from that, as Rene says, I think we are looking at not much more than a decorative feature. I think the origin may be that they envisaged some kind of physical ring that's closed, like a bracelet or metalwork or some other kind of craft. The consequence would indeed be that if the ring has a start and end, it will be at this point.