Steve,
These were given to me from Laurie Hall who for a short period in the 1990's made 6 & 8 inch telescopes under the name Hall Engineering. From memory, he obtained these from Kasai Trading in Japan.
In the 1960s, Laurie made mounts, mirror cells etc for the Amateur Astronomy Supply Company, which later had a change of ownership and and became Astro Optical.
|