Originally Posted by
JohnDThompson
Looks right to me.
There's certainly some similarities with the Victoire lugs but I think Losa did that signature "Y" cutout to blanks and did not modify existing Prugnat piercings.
Note they also appear on the top sockets of the headlugs and also the BB shell, plus another signature motif (tear drop) is on the chainstay sockets of the BB shell.
I think Losa made all his own frame bit piercings (or had them done to his spec).