It's always been my understanding that the oval lollipop tuners came on transitional period Fender basses, or instruments from 65/66. I'm wondering if it would be possible for an instrument stamped 1968 to come equiped with these keys. I have a bass that's stamped 1968, and has these, and otherwise resembles an earlier post CBS bass. The logo is the earlier version etc. Has anyone ever seen these tuners on basses made later than 1966?