Your wheel is an older Shimpo RK-series (often called “Shimpo 21”), and even though it’s not a modern model like the Whisper, it shares many of the same core design ideas that made Shimpo wheels popular.

Shimpo RK-21 pottery wheel. This model uses a belt drive motor(traction drive system) which gives a smooth and steady rotation. it is designed to keep spinning even when you press hard on clay and can handle large amount. it has reversible direction for both left or right handed potters

This wheel is a solid, mid-to-high power pottery wheel built for serious use, not just beginners, known for longevity and reliability.