Doesn't look like Freddie to me. I think he was on the factory Honda by 1980. If not, it may have been on Ducati. I don't believe Freddie ever raced Yamahas after his club racing days. I raced against him in 1978 when he was on an RD400 and I was on my CB400F. It wasn't pretty being beaten by a 16 year old kid as badly as I was beaten.