I remember seeing the Polaris as early as 1981 in RVR Optical ads. At least it sure looked like a Polaris with a short 70mm refractor mounted on it. Seems late 1983 Celestron started showing ads of the black Vixen line of scopes. I bought a brand new SP mount in 1986. Seems Celestron was ahead of Orion by a few years. In 1996-97 Celestron started selling the first wave of China made scopes and mounts and they were a huge step down from the Vixen stuff. The first Gen of CG5 and 4 mounts with the small tripod legs were pretty much junk vs the Vixen mounts. Seems Orion sold the green Vixen mounts and OTA's around 1990 till about 94 if i remember right.
Orion sold the green Vixen GP and GPDX mounts with aluminum tripods and Orion-branded, Vixen-made Japanese refractors through 2001. I bought one then.