Racine Tortue! I had a spool of 12oz for hooklengths as a teenage canal novice in 1974. I thought it was the height of sophistication, and great line. I used every inch on the spool. Another long-lost line from a bit later - Sundridge Green Force in 1.5 lbs. Great for light stick float and hooklengths. I wish you could still get both.
Still have spools of 1 and 1.5 lb Force in my box for canal use. It's 20+ years old (that's how long I stopped fishing for) and is still as good as it was back then.