Despite being written in graphite pencil these notes appear to have faded a lot (or were never very dark). It was also problematic for me to photograph them as it was a bright sunny day and the images appear to be a bit overexposed.
I have adjusted the first image to darken it. However the purplish tinge of the marginalia is evident whilst the grey of the endpaper notes is also evident. I showed these photographs to Nick Connell the other day and he immediately identified the difference, just from the photographs.
Treat me gently I'm a newbie.