Hi Bear is Gray.
What model number/name is your Bernina?
As far as I know, there are three confusingly named "styles" of Bernina feet. The "Old" style; the "New" Style, and the "Newest/Computerized" style with a large glass sensor to the top right of the foot. You probably won't be using this one since it works only on the latest computerized models.
The "New" style has a white label with the foot number printed on it. The top part of the label has a diagonally striped red and white area. The stripes are very tiny and look "solid" in my photo.
Like this...
This is a "New" style, which is 10 years, or much more, old. My Bernina Activia 230 PE uses this type of foot.
Notice the notch cut out of the back of the top section of the foot. This notch, and the red/white stripes mark this as a "New" style foot. It's a 7-Groove pin tucking foot.
I'm going to find you a link on the "Old" style B. feet, but let me know your model number/name.