I've heard of it Kath, and had a piece or two many years ago. I haven't come across it lately though. Hopefully someone can help you.
Ah-ha! It is Kristall KrisLa, not KrisTa. So found some info with that correction. This description on catawicki gives a bit of the company history. Of course I can't vouch for it. Maybe you or someone else can build on the info to verify or not. https://www.catawiki.com/en/l/20079...ttles-and-a-tray-made-of-crystal-italy-c-1970
Thanks Judy and Laura. Now that I have the correct name....I thought my covered box was pretty different.