I have recently inherited a couple of pens from my father. I'm mainly a Parker freak, and one of them was a battered P75 I've repaired and put back on the road. The other takes me out of my comfort zone: a Conway 87 - see photos below. It's in quite a bad way and needs a good deal of TLC. It is inscribed 14CTGOLD on the nib, and 'Conway 87 made in England' on the barrel. I've found a website that sys these pens were made (or started being made) in 1960.
The sac has totally perished. It looks to me as if the squeeze filler is not a removable converter, but is fixed into the pen. Is this correct? I don't want to apply too much force. What is the best way to disassemble the pen? I've recently successfully replaced a sac on an old Parker Duofold, with the help of advice from people in the FPN and a couple of Youtube videos, but there seems to be nothing equivalent for Conway Stewarts. Is it the black ring that unscrews, with the help of a hair drier and section pliers? I imagine the nib must be removed outwards, but is it a straight pull or does it unscrew?
All help and advice gratefully received. It would be really nice to put this veteran back into working order.