Last Christmas I bought a Togo Kelly from Paris FSH. All the markings on it were very faint. One day I was looking at it in sunlight and noticed what looked like the celtic cross but without a dot in the middle. Since it was textured leather and all the markings were not deep, it was hard to tell if the marker had just missed the dot or not meant it to be there. Several months ago I did show it to Claude. I was asking him about something else and happened to have my Kelly with me so I asked him about the missing dot. He just told me that all Hermes bags had their own markings, numbers, etc., to denote who made it and blah blah blah. I didn't push it as he was busy but I believed he had not really had a good look at the strap: the lighting wasn't good and he was too far away and the markings were all so faint anyway.
I've since asked a couple of SA's about it. One, who was very knowledgeable, had heard of it. The other seemed to have it confused with the shooting star.