Type of marking(s) on the KW belt disc for control times / timing belts ?

Moin, maybe I need a pair of glasses or there’s a 3rd variant of the KW label for timing/dental belt ? From “Uncle”-Robert’s (as always perfect) video (at time -> 2:43) one can apparently see a kind of additional disc, which reproduces the teeth, is arranged behind the KW belt disc and then offers behind 2 neighboring teeth 2 indentations. On 6th picture this article could be seen after intense staring at the back/top (on the right side of the very well-recognizable block marking (nase) lying tooth) a notch … at the left side of the tooth lying next to it’ I see at best will not from picture 3 of the very good photos from last year’s Thread of ‘Schimming’, one can at least after a few – zooming in – a notch at the end of a tooth is clearly visible. I had a predetermined 5 times the KW(!) responsibly the ‘Tanging around’ of the ‘Nimming’, but ‘I had not noticed the ‘becoming’ in front of the mark.