My opinion,
I’d save it even in a bad state, it’s a piece of history - which you are interested in.
You will need to fill all those little cracks because they SUCK the paint in and leave a line. Car filler if you are a Philistine like me or putty if you want to replicate the original.
Inside there is only one solution - decoraters caulk applied from a gun - they didn’t have them in 1880 bit if they had… they would!
Coo not only are you on Monday and I’m still on Sunday but you’re looking forward to winter and us to summer…pah.