Queen of Sheba sword buy

This is not about the Queen of Sheba Sword quest, but a thing about buying the sword:
Hadn’t enough money to buy it as I finished the quest. Now that I have enough money I returned to the swordsmith in Sasau, but the sword is missing in his inventory. Both trade and loot. Anyone else noticed this?
Wheren’t able to look in the “very hard” lockpicking chest in his house though…
Also can’t tell if this occured with the 1.3 and following patches.