Montblanc Permanent Blue, the best permanent ink I ever tried. : r/fountainpens
Montblanc Permanent Blue - 60ml Bottled Ink - Dromgoole's Fine Writing Instruments
Montblanc Ink Bottle Permanent Black | Penworld » More than 10.000 pens in stock, fast delivery
Permanent BLACK! User of Montblanc permanent black over 2 years. Undiluted, this works magically on cheapest copy paper, Moleskine - you name it. Only fault was smear on Rhodia/TR. Diluting it 4:1
Montblanc Black Permanent Ink Bottle – Truphae
Montblanc Permanent Blue Ink Review - BLAKE'S BROADCAST
Platinum Pigment Ink & MontBlanc Permanent Ink Blue | Flickr