I am NOT sure if this is what you are looking for or not, but, have a look at this website: http://www.utrechtart.com/Prismacol.....;currency=USD&gclid=CMW_nbSs8c0CFQFkhgods5cHyQ.

Please remember I have the art skills of a Gnat. I also have the wit and intellectual ability of suborder Nematocera.

If that article is of now use to you, I will gladly do more in depth research for you.

That is close but not quite, the brand is right but not the model of pencil! I wanna say Coloerase or something like that

I see. Want me to look into them? Sorry for not replying sooner.

I use these: https://www.amazon.com/Prismacolor-.....ords=col+erase although some people use the non-photo blue: https://www.amazon.com/Wholesale-CA.....ords=col+erase
The non photo are a holdover from the days of stat-cameras, where bluegreen lines would not be read by cameras