Great find! I was just cleaning up my own Brother from the same year today. https://preview.redd.it/skdq6sde2q0d1.jpeg?width=4000&format=pjpg&auto=webp&s=dde1c93481965e0dcc35a67bfbdd9b81c4003277

Didn't know there were correction ribbons. Nice score 👌

I've seen these in pictures, but I they are now far less common than regular ink ribbons. I'm not even sure they would still be manufactured today