Hi Kiki
Nice! If they are mikis, they have great colorfulness, which I have never seen in mikis before, so I am really curious, too.
Now what town or port did you buy them in? 1968. hmm.........
If you don't hear from the Cea of Cortez folks, soon, find one of their threads and post this again. The may miss a post that isn't on a thread they contributed to.