Nice. I'm not familiar with that brand. It resembles some Waterman pens of the era.
Sent from my SM-G991U using Tapatalk
It is very similar materials wise, inside and out design as the Waterman's of the day as you've noted.
I've developed a safety style fountain pens penchant for edc. The retractable nib and cap top seal means you can shake the proverbial out of it, change altitude, fly in a pressurised cabin without consequences that more conventional FPs don't like so much and burp out ink.
The only really modern manufacture fixed nib style FPs that work in that regard have a dual reservoir chamber. But in those cases one has to drain the small volume near the nib and feed back into the main tank but bumps and jolts from carry can still dirty inside of the cap.
The broadest choice of safety FPs comes from their golden age back in the first half of the 20th century.
Those examples invariably need seal restoration but that is honestly very straight forward. I use a few modern dirt cheap rubber O-ring seals (turning nob and rear section) to address that and all my examples have worked fine.
The French seemed to have a plethora of different safety pen manufacturers back in the day. I'd never heard of the manufactured "Rool's" either before buying it. It was not expensive, essentially new old stock and came in the original box.