Nice find! Deliberating using my only slab to upgrade my lightning BSS to +5 but I'm sure I'll be getting more endgame use out of Enchanted Estoc +5.

Speaking of Balder Side Swords...ran through the parish with Covetous Gold Serpent Ring and ten humanity active. Not one, but TWO dropped from the three knights there. Made it through the catacombs to fire one up and was impressed with myself that I didn't even come close to death. Sniped those damn wheel skeletons with sorcery.