Hello, or perhaps I ought to say, 'Bonjour',
This French Watermans pen, possibly a Ligne 60(?), has a filling system that I haven't come across, before.
Dipped in ink, the 18k nib writes beautifully, but I can't fathom out how to fill the 'cartridge'. The aluminium cartiridge has a hinged, brass tab at the end. Does the cartidge screw, or pull out? I'm reluctant to use force for fear of breaking something.
I'd be grateful of any guidance you can offer.