The Kasnar was an inexpensive scope sold by Kmart, Woolco, and similar discount stores. Some sporting goods stores sold them as well. There is an old one in my gun case, somewhere. They were sold in the early seventies, I believe, price range that I remember were $9 to $12. If I recall correctly, Kasnar was an importer, that also brought in less expensive knives. This is all from memory. I can't find any reference in my old Shooters Bibles from back then.
Hayden, Nick Stroebel's latest book lists the Kassner 4x32 scope produced from 1977-1986 and valued at $40-60 dollars, depending upon condition. Imported from Japan, they featured anodized alloy tubes, coated lens, constantly centered reticles and 1/4 min click adjustments. Hope this helps.
P.S. I believe his book has the name misspelled.