The grenade is a simbol for the French Gendarmerie too.
After making some searches I am unable to find the CAVISCO DEL VOI=CABEZO DEL REI discussion. Maybe it took place in swordforum and not in vkingsword.
I believe Bonham made the Spanish colonial conection because they previously had this sword:
https://www.bonhams.com/auction/3091...fficers-sword/