I believe you are right that they made them peaked fenders until they discontinued the model. What I don't know is how many were made in 1965-66 and whether they supplemented with flat fenders toward the end. I've seen only a handful 65-66 Travelers and a couple had peaked fenders, while a couple had a plain profile front fender. Seeing them many years after they were made, there's always a chance people replace parts, so never total surety. And I think part of the issue is collector interest tends to drop off for the post-1965 three speed light weights, so not as much overall effort has been made to document. If it was a Sting Ray, we'd probably have a dozen collectors who'd know the exact week they did or did not change the fenders.