If it is black and straight, it is a RB-300. If is silver and "S" shaped, it is a RB-200.
5 responses Add your response
The P3 is a different turntable than the Planar 3. The Planar 3 came in two iterations, the earlier, and shorter lived, used the RB200 arm, sourced from Lustre/ACOS, if memory serves. All P3 turntables came with the RB300. The current P3/24 come with the RB301. But the question was about the Planar 3, not the P3.