What I was talking about was the builders AMA number that would have been issued in the late 60s.

The Phil Kraft won the 1967 AMA Nationals and in 1968 won the world championships with the Kwik Fli III. It was published in the February 1968 Modal Airplane News. See first image. Shortly there after Top Flite produced the kit. See second image. There was also a kit by Graupner (See third and fourth image) and a fiberglass and foam taper wing kit by Howard Engineering. See the orange aircraft in the last image. I’m currently flying the HE version and have another kit that I have stored away.

Most recently Home Hobby Solutions came out with reproduction kit that is excellent. http://www.rcuniverse.com/forum/m_4221047/tm.htm

I also have one of HHS kits.