I wish you luck Jean-Luc.
I confess i am not very keen at checking things with Norman's bible, specially on what touches particularly un-characteristic specimens. It looks like pommels like the one in your sword have gonne through a long period as a common type, when you compare it with, for one, the sail guard sword i have posted, plus other examples i have in my little collection.
Sorry to switch on the conplicometer
.
.