Well it is a Tri-Sport RTS series of trike it looks like a mix it has the bigger 10 inch front spoked wheel that the Street Legal Trikes came with instead of the solid wheel that was 8 inch. I would need to see more pictures to tell you more. I was a Tri-Sport dealer in in 1971 through 1974 .
Steve
Take a look in my photo albums for a lot more about Tri-Sports