Do any of you remember the Rokunar 300 2.8 lens?

I remember seeing it a long time ago, and wondered if anyone has the skinny on the lens.

As it was very cheap, was it horrible, average, or a wonder bargain.

Bobby

It seems this one is not known, and also I have seen a "Cambron" version of this lens,BUT--
of the three known makes, do any of you have info as to which is best other than what articles are out there and still can be found.?