1967 to 1969 Barracuda locking gas cap

I worked at gordon chrysler plymouth during 1979 -1986. I bought a bunch of stuff that was obsolite. These caps were part of what chrysler was selling. I got them diiiiiirt cheap. I kept 1 and it still resides in the console of my daughters 68 formula 383-s. After a few years of use, it tended to go down the filler neck. Not knocking them. But they are made from pot metal. Just beware if you use it for a long period. Also, it fits under the flip cap. Also, it works on other flipcaps. Oh, i sold the remainding caps to ted stephens.