I've been blessed with a Stanely No. 55 in near perfect shape with all the
cutters and attachments. I've experimented with it a bit and have watched
The Woodwright's Shop episode on the 55 several times (
https://www.pbs.org/video/woodwrights-shop-combination-planes/)

I'm wondering since I have this 55, do I really need a Rabbet Plane?