It's an early commercial for Kellogg's Sugar Frosted Flakes…which is what I'll always call them. Oh, they can take the world "sugar" off the box. They can even change the formula, as rumor has it they've done. They're still Sugar Frosted Flakes. Can't fool me.
That is, of course, the late Thurl Ravenscroft supplying the voice of Tony the Tiger. I'm not sure who the announcer is…sounds a little like Bud Sewell but maybe not. Give a listen.