I finally caved in got hold of some the 1670 J.Herbins. Glad I did too! As you can see from the image posted the grey and rouge work beautifully together and you can just make out the gold at the blend areas. This freeform alphabet was done with an automatic pen on bog standard cartridge paper. The only thing I will say is that you have to give the bottles a serious shake if you want to enjoy the juicy gold flecks! And strangely, it’s got a blood like quality to it! Just saying.
I’m also working on something a little more involved on a very heavy Bockingford paper and when posted you’ll see just how dramatic these inks are.
FOUNTAIN PEN INK ART 