These are Bril Inks and an ESSRI (Ecclesiastical Stationery Supplies Registrars Ink) document ink. I don’t have an awful lot to say about these. The Bril inks are very basic, no hidden hues but do react with bleach quite well. They are very thin in consistency and I would imagine prone to fast fading. The ESSRI ink is a no nonsense document ink – not much I can do with it. If you want more info: http://www.fountainpennetwork.com/forum/topic/205705-ecclesiastical-stationery-supplies-registrars-ink/
FOUNTAIN PEN INK ART 