As far as I can tell, that's a full Triomphe group, and it is bomb proof. You hardly ever see full Triomphe groups. Usually, they're missing pedals, seatpost, headset or all three. The frame is 531c, which means full 531.
I have this same bike in racing red, though it came with Victory. The smallish frame felt sorta stiff, so I spent some $$$ on wheels/rubber. I can't really sell it locally for what it's worth to me ($700+), so it's in the stable until I give it to a nephew or grand nephew on down the road.
Last edited by SurferRosa; 03-02-23 at 05:49 PM.