Unicorn PF Dish - Who Manufactured Them ?

Hi,

Does anyone know who manufactured the Unicorn spun aluminium prime focus dishes?

The dish face has the characteristic spun aluminium pattern that you see on the Precision dishes and I wondered if Unicorn had them manufactured by Precision. The main difference between a Unicorn dish and a Precision dish is the mounting system on the back of the dish. The Unicorn does not have the circular tubular ring that is characteristic of Precision.

I have attached a couple of Unicorn pics below.