Turntable 4 x 4 Complete, Faceted with Indented Base pieces (1970's)

[Peter Swinkels]

These three turntable pieces appear to be separate parts that should make up one of these: https://www.bricklink.com/v2/catalog/catalogitem.page?P=3404ac02#T=C . The complete turntable pieces don't appear to be designed to be taken apart. Does that mean these are from broken turntables or are another type altogether?

Edited May 14, 2023 by Peter Swinkels