(not mine)
With all the crazy RZ activity lately I thought I'd add this one. And like the TZR SP posted recently, this one is from the Alan Wilzig collection and also is only on a Bill of Sale.
1984 Yamaha RZ350 Kenny Roberts
https://iconicmotorbikeauctions.com/auction/1984-yamaha-rz350-kenny-roberts-2/
Seller info:
https://www.amlu.com/2017/11/28/banking-tycoon-alan-wilzig-has-a-pro-racetrack-in-his-backyard/
https://bikereview.com.au/the-wilzig-racing-manor-disneyland-for-rev-heads/