I need help removing the bottom bracket, not sure what exact tool i need. The bottom bracket doesn't look like the original style raleigh used, if you cant see from the pics, it has 16 notches total, 12 small and 4 large evenly spaced apart. Is it possible to tell what style bracket it is ? fixed? sealed? i am not the greatest yet at bike terminology. I just wanted to refurbish a bike for my wife, and this bottom bracket is not like my vintage bike at all.

Any help would be appreciated greatly!