The Sigil armaments can be found at the following locations.
At the Draken Mansion during the Sub-Quest with Kairu.
Buy for 100,000 Gold at or near the clothier in Tradefair.
At the Cytherian Bridge on the way to Tradefair.
Go to the northeast area of the map by airship. Then enter the city and fight in the tournament and you will receive it after defeating several fighters.
At the far southeast of the desert in the Black Send sub-area (if walking from Polamaze this location is due east). Find the stairs that lead into a secret area and defeat the monster there.
Added by: Sanzano Jun 26th 2009, ID#11752