Raul Jorolan Art - Years ago, I enjoyed doing a lot of pen and ink illustrations. Hoarded different technical pens and point sizes, quill pens and different nibs. And I got this
Rotring Isograph Ink 23ml black – graphicsdirect.co.uk
Review: Rotring Drawing Black Ink (250ml and 23ml) | Parka Blogs
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Rotring 600 ink well SILVER red print knurled grip era / Made in Germany ART PEN | eBay