Variants of a mold are catalogued separately, so each one has its own sets and minifigs. Check these too if something you expect is missing here.

• 3404ac01 Turntable 4 x 4 - Old Type Complete - Faceted this part is a alternate of it
• 3404ac02 Turntable 4 x 4 - Old Type Complete - Faceted with Indented Base this part is a alternate of it