Serial: WK6005261.
So this is a 1976.
Thanks for the help (and history lesson). Didn't realize that Raleigh "ran out" of Huret dropouts so early. I guess I haven't seen a lot of examples of Raleigh Competitions, but of the handful of come across, this was the first Suntour dropout I've seen. Glad to know I've got one of the few.