Hello everybody, newbie here
I have an older knife I want to restore - its William Rogers "I cut my way" scouting knife with a leather (I think) handle. It's not in too bad condition, so I was thinking to give it a nice polish, but when I started to clean it I noticed that the guard has a gap and I can see the thang is rusted quite a lot. I was thinking that it might be a good idea to remove the pommel and clean it all. But I have no idea how to do it - is it a tang pinned over a brass insert? It seems like I need to grind the pinned end until everything falls apart and then re-pin it with a slightly shorter handle/pommel. I don't want to go about it by destroying the handle as it looks It will look good with a bit of restoration. Any ideas or comments?
some pictures below

I have an older knife I want to restore - its William Rogers "I cut my way" scouting knife with a leather (I think) handle. It's not in too bad condition, so I was thinking to give it a nice polish, but when I started to clean it I noticed that the guard has a gap and I can see the thang is rusted quite a lot. I was thinking that it might be a good idea to remove the pommel and clean it all. But I have no idea how to do it - is it a tang pinned over a brass insert? It seems like I need to grind the pinned end until everything falls apart and then re-pin it with a slightly shorter handle/pommel. I don't want to go about it by destroying the handle as it looks It will look good with a bit of restoration. Any ideas or comments?
some pictures below